Sentence Screen Fitting LeetCode Solution

Difficulty Level Medium
Frequently asked in Google UberViews 1

Problem Statement:

Sentence Screen Fitting LeetCode Solution: Given a rows x cols screen and a sentence represented as a list of strings, return the number of times the given sentence can be fitted on the screen.

The order of words in the sentence must remain unchanged, and a word cannot be split into two lines. A single space must separate two consecutive words in a line.

Examples:

Example 1:

Input:

 sentence = ["hello","world"], rows = 2, cols = 8

Output:

 1

Explanation:

hello---
world---
The character '-' signifies an empty space on the screen.

Example 2:

Input:

 sentence = ["a", "bcd", "e"], rows = 3, cols = 6

Output:

 2

Explanation:

a-bcd- 
e-a---
bcd-e-
The character '-' signifies an empty space on the screen.

Example 3:

Input:

 sentence = ["i","had","apple","pie"], rows = 4, cols = 5

Output:

 1

Explanation:

i-had
apple
pie-i
had--
The character '-' signifies an empty space on the screen.

Approach:

Idea:

The idea is to first concatenate the entire set of words into a single word (let’s say “concat) separated by space, and then check how many times we can fit it into the screen. We keep a pointer to check which character of concat we are currently pointing to. For each row, we will check the maximum part of concat we can store. The pointer will get incremented on the basis of the column size of the screen and then we will check what character the pointer is pointing to. If it is a ” ” then it is fine, else we need to trace back to find the previous occurrence of ” “. Check out the code for a better understanding.

Sentence Screen Fitting LeetCode SolutionPin

 

Sentence Screen Fitting LeetCode SolutionPin

Code:

Sentence Screen Fitting C++ Solution:

class Solution {
public:
    int wordsTyping(vector<string>& sentence, int rows, int cols) {
        string concat = "";
        for(auto it:sentence){
            concat += it + " ";
        }
        int n = concat.size();
        int ptr = 0;
        for(int r=0;r<rows;r++){
            ptr += cols;
            if(concat[ptr%n] == ' ')
                ptr++;
            else{
                while(ptr>0 and concat[(ptr-1)%n] != ' ')
                    ptr--;
            }
        }
        return ptr/n;
    }
};

Sentence Screen Fitting Python Solution:

class Solution:
    def wordsTyping(self, sentence: List[str], rows: int, cols: int) -> int:
        concat = " ".join(sentence) + " "
        n = len(concat)
        ptr = 0
        for r in range(rows):
            ptr += cols
            if concat[ptr%n] == " ":
                ptr += 1
            else:
                while ptr>0 and concat[(ptr-1)%n] != " ":
                    ptr -= 1
        
        return ptr//n

Complexity Analysis of Sentence Screen Fitting LeetCode Solution:

  • Time Complexity: The time complexity of the above code is O(rows*length_of_max_word).
  • Space ComplexityThe space complexity of the above code is O(sum of the length of words).

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585Maximum path sum in a triangle176
586Remove Linked List Elements Leetcode Solution176
5873Sum Closest LeetCode Solution175
588Rotate List Leetcode Solution175
589Count all subsequences having product less than K175
590Find the smallest positive integer value that cannot be represented as sum of any subset of a given array175
591Decode Ways175
592Count the number of nodes at given level in a tree using BFS175
593The Knapsack Problem175
594Minimum number of subsets with distinct elements174
595Shortest Path in a Grid with Obstacles Elimination LeetCode Solution174
596Minimum insertions to form a palindrome with permutations allowed174
597Rotate Image LeetCode Solution173
598Find minimum difference between any two elements173
599Insert Interval Leetcode Solution173
600Maximum Number of Chocolates to be Distributed Equally Among k Students173
601Bubble sort using two Stacks173
602Maximum Distance in Array173
603Same Tree LeetCode Solution173
604Distance Between Bus Stops Leetcode Solution173
605Minimum number of distinct elements after removing m items173
606Sort Characters By Frequency LeetCode Solution172
607How to check if two given sets are disjoint?172
608Find Sum of all unique sub-array sum for a given array172
609Find if an Expression has Duplicate Parenthesis or Not172
610XOR Operation in an Array Leetcode Solution172
611Longest Increasing Subsequence172
612Stone Game LeetCode172
613Painting Fence Algorithm172
614Sieve of Eratosthenes172
615Word Pattern171
616Replace Elements with Greatest Element on Right Side Leetcode Solution171
617Defanging an IP Address Leetcode Solution171
618Permutation in String Leetcode Solution171
619License Key Formatting Leetcode Solution171
620Reverse a stack without using extra space in O(n)171
621Frog Jump Leetcode Solution171
622Applications of Breadth First Search and Depth First Search171
623Remove All Occurrences of a Substring LeetCode Solution170
624Sort Array By Parity LeetCode Solution170
625Word Wrap Problem170
626Find the Duplicate Number LeetCode Solution170
627House Robber170
628Smallest Good Base170
629K Empty Slots LeetCode170
630Minimum Cost to Hire K Workers170
631Printing brackets in Matrix Chain Multiplication Problem169
632Tracking current Maximum Element in a Stack169
633Non-overlapping sum of two sets169
634Longest Substring with At Least K Repeating Characters LeetCode Solution169
635Distance of nearest cell having 1 in a binary matrix169
636Minimum Depth of Binary Tree Leetcode Solution169
637Best Time to Buy and Sell Stock LeetCode Solution169
638Maximum Consecutive Numbers Present in an Array169
639Isomorphic Strings169
640Segregate 0s and 1s in an Array169
641Optimal Account Balancing LeetCode Solution169
642Merge Two Balanced Binary Search Trees168
643Moving Average from Data Stream Leetcode Solution168
644Longest Substring with At Most K Distinct Characters LeetCode Solution168
645Employee Free Time LeetCode Solution168
646Wiggle Sort168
647Kth Missing Positive Number Leetcode Solution168
648Valid Palindrome II Leetcode Solution168
649Coin Change Problem168
650Binary Tree Zigzag Level Order Traversal LeetCode Solution168
651Iterative Method to find Height of Binary Tree168
652Find Maximum Level sum in Binary Tree167
653Queries for counts of array elements with values in given range167
654Maximum difference between first and last indexes of an element in array167
655Reorganize String167
656Sum of All Odd Length Subarrays Leetcode Solution167
657Path With Maximum Minimum Value LeetCode Solution167
658Check If It Is a Straight Line Leetcode Solution167
659Minimum Number of Steps to Make Two Strings Anagram Leetcode Solutions167
660How to Create Mergable Stack?167
661Count Good Nodes in Binary Tree Leetcode Solution167
662Maximum Number of Occurrences of a Substring Leetcode Solution166
663Strobogrammatic Number LeetCode Solution166
664Find Largest d in Array such that a + b + c = d166
665GCD Of Two Numbers166
666Best Time to Buy and Sell Stock with Cooldown Leetcode Solution166
667Rearrange an array in order – smallest, largest, 2nd smallest, 2nd largest166
668Flipping an Image LeetCode Solution166
669Find the Distance Value Between Two Arrays Leetcode Solution166
670Delete consecutive same words in a sequence165
671Reducing Dishes LeetCode Solution165
672Remove Invalid Parentheses Leetcode Solution165
673Convert an array to reduced form165
674Letter Combinations of a Phone Number165
675Valid Palindrome165
676Partition Labels LeetCode Solution165
677Find pairs with given sum such that elements of pair are in different rows165
678Print the Fibonacci numbers in reverse order165
679Check if a queue can be sorted into another queue using a stack165
680K Empty Slots165
681Inorder Successor of a node in Binary Tree165
682Increasing Decreasing String Leetcode Solution164
683Maximum Number of Coins You Can Get Leetcode Solution164
684Check If Two String Arrays are Equivalent Leetcode Solution164
685BFS vs DFS for Binary Tree164
686Number of Dice Rolls With Target Sum LeetCode Solution164
687To Lower Case Leetcode Solution164
688Factorial Trailing Zeroes Leetcode Solution164
689Find Leaves of Binary Tree LeetCode Solution163
690Power of Four Leetcode Solution163
691Permutation Sequence LeetCode Solution163
692Find the Smallest Divisor given a Threshold Leetcode Solution163
693Lucky Numbers in a Matrix Leetcode Solution163
694Longest Increasing Path in a Matrix LeetCode Solution163
695Subset Sum Leetcode163
696Delete Nth node from the end of the given linked list163
697Valid Perfect Square Leetcode Solution163
698Populating Next Right Pointers in Each Node163
699Recover Binary Search Tree163
700Partition Array Into Three Parts With Equal Sum Leetcode Solution163
701Form minimum number from given sequence163
702Edit Distance LeetCode Solution163
703Dynamic Programming Basics162
704Maximum Product of Two Elements in an Array Leetcode Solution162
705Merge Two Binary Trees LeetCode Solution162
706Reversing a Queue using Recursion162
707Binary Tree zigzag level order Traversal162
708Ugly Number Leetcode Solution162
709Unique Paths II Leetcode Solution162
710Find whether an array is subset of another array162
711String to Integer (atoi) LeetCode Solution162
712Reverse Only Letters LeetCode Solution162
713Sort Array by Increasing Frequency Leetcode Solution162
714Construct BST from given Preorder Traversal162
715Decompress Run-Length Encoded List Leetcode Solution161
716Add and Search Word – Data structure design LeetCode161
717Find the largest multiple of 3161
718Robot Room Cleaner Leetcode Solution161
719Convert a Number to Hexadecimal Leetcode Solution161
720Reservoir Sampling161
721Binomial Coefficient161
722Keyboard Row Leetcode Solution161
723Majority Element II Leetcode Solution160
724Perform String Shifts Leetcode160
725Finding K closest element160
726Find the node with minimum value in a Binary Search Tree160
727Bulb Switcher LeetCode Solution160
728Restore IP Addresses Leetcode Solution160
729Sum of f(a[i], a[j]) over all pairs in an array of n integers159
730Word Pattern LeetCode Solution159
731Numbers with prime frequencies greater than or equal to k159
732Race Car LeetCode Solution159
733Minimum Cost For Tickets Leetcode Solution159
734Snakes and Ladders LeetCode Solution159
735Check if Two Expressions With Brackets are Same159
736Rank Transform of an Array Leetcode Solution159
737Find Maximum Depth of Nested Parenthesis in a String159
738Find Pair with Greatest Product in Array159
739Hamming Distance Leetcode Solution159
740Linked List Cycle158
741Minimum Distance Between BST Nodes Leetcode Solution158
742Invert Binary Tree LeetCode Solution158
743Morris Traversal158
744Maximum 69 Number Leetcode Solution158
745First Unique Character in a String LeetCode Solution158
746Student Attendance Record I Leetcode Solution158
747Find unique character in a string158
748Minimum Height Trees158
749Longest Span with same Sum in two Binary arrays158
750Non-decreasing Array LeetCode Solution158
751Maximum Product of Three Numbers LeetCode Solution158
752Tiling Problem158
753Diagonal Traversal of Binary Tree158
754Binary Tree Maximum Path Sum LeetCode Solution158
755Merge K Sorted Linked Lists158
756Minimum time required to rot all oranges158
757Number of Islands II LeetCode Solution158
758Queue based approach for first non-repeating character in a stream158
759Generate all possible sorted arrays from alternate elements of two given sorted arrays158
760Remove Nth Node From End of List Leetcode Solution157
761String Compression LeetCode Solution157
762Find if Path Exists in Graph Leetcode Solution157
763Sorted Linked List to Balanced BST157
764Maximum Depth of N-ary Tree Leetcode Solution157
765Best Meeting Point LeetCode Solution157
766Minimize Maximum Pair Sum in Array LeetCode Solution157
767Stack Permutations (Check if an array is stack permutation of other)157
768Kth ancestor of a node in binary tree157
769Largest subarray with equal number of 0s and 1s157
770Remove brackets from an algebraic string containing + and – operators157
771Total Numbers With no Repeated Digits in a Range156
772Maximum Length of a Concatenated String with Unique Characters Leetcode Solution156
773Partition to K Equal Sum Subsets Leetcode Solution156
774Elements to be added so that all elements of a range are present in array156
775Jump Game156
776Symmetric Tree Leetcode Solution156
777Largest Rectangle in Histogram LeetCode Solution156
778Final Prices With a Special Discount in a Shop Leetcode Solution156
779Find All Duplicates in an Array LeetCode Solution156
780Check If Array Pairs Are Divisible by k LeetCode Solution156
781Special Array With X Elements Greater Than or Equal X Leetcode Solution156
782k-th missing element in increasing sequence which is not present in a given sequence155
783Largest rectangular sub-matrix whose sum is 0155
784Transpose Graph155
785Split a String in Balanced Strings Leetcode Solution155
786Search a 2D Matrix II Leetcode Solution155
787Program for Bridge and Torch problem155
788Evaluate Reverse Polish Notation LeetCode Solution155
789Find Median from Data Stream LeetCode Solution155
790Count items common to both the lists but with different prices155
791Print a Binary Tree in Vertical Order154
792Circular Queue154
793Maximum Difference Between Increasing Elements LeetCode Solution154
794Valid Number154
795Deletion in a Binary Tree154
796Base 7 Leetcode Solution154
797Number of NGEs to the Right154
798Minimum Jumps to Reach Home LeetCode Solution154
799Interval Tree154
800N-Queens LeetCode Solution154
801Longest Subarray Having Count of 1s One More than Count of 0s154
802Sort an array according to the order defined by another array154
803Course Schedule II – LeetCode154
804Growable array based stack154
805Check for Palindrome after every character replacement Query154
806Search in a Binary Search Tree Leetcode Solution154
807Nested List Weight Sum II LeetCode Solution153
808String comparison containing wildcards153
809Reorder Data in Log Files LeetCode Solution153
810Spiral Matrix II Leetcode Solution153
811Nearest Exit from Entrance in Maze LeetCode Solution153
812Minimum Time Visiting All Points Leetcode Solution153
813Minimum number of jumps to reach end153
814Merge Sorted Array LeetCode Solution153
815Minimum swaps to make sequences increasing153
816Last Stone Weight II LeetCode Solution153
817One Edit Distance LeetCode Solution153
818Number Complement Leetcode Solution153
819Get Maximum in Generated Array Leetcode Solution153
820Count quadruples from four sorted arrays whose sum is equal to a given value x153
821Remove Duplicates from Sorted List II153
822Sort Array By Parity II Leetcode Solution153
823Priority Queue using doubly linked list152
824Subarray Product Less Than K LeetCode Solution152
825Crawler Log Folder Leetcode Solution152
826Iterative Preorder Traversal152
827A Space Optimized DP solution for 0-1 Knapsack Problem152
828Find all triplets with zero sum152
829Maximum Profit in Job Scheduling Leetcode Solution152
830Regular Expression Matching152
831Convert BST to Min Heap152
832Remove Duplicates from Sorted List LeetCode Solution152
833Relative Ranks Leetcode Solution152
834Maximum size subarray sum equals k152
835Form Minimum Number From Given Sequence151
836Find Maximum Sum Possible Equal Sum of Three Stacks151
837Insert into a Binary Search Tree Leetcode Solution151
838Level order Traversal in Spiral Form150
839Sequences of given length where every element is more than or equal to twice of previous150
840Given an Array of Pairs Find all Symmetric Pairs in it150
841Minimum Swaps to Make Strings Equal Leetcode Solution150
842Maximum Nesting Depth of the Parentheses Leetcode Solution150
843Path with maximum average value150
844Brick Wall LeetCode Solution150
845Minimum Number of Taps to Open to Water a Garden LeetCode Solution150
846Alien Dictionary LeetCode Solution150
847Check if a given array can represent Preorder Traversal of Binary Search Tree150
848Top K Frequent Words LeetCode Solution150
849Sort Colors150
850Find the subarray with least average150
851LCS (Longest Common Subsequence) of three strings150
852Tree Traversal (Preorder, Inorder & Postorder)150
853Valid Parentheses Leetcode Solution150
854Design a Stack With Increment Operation Leetcode Solution150
855Sum of nearest smaller and greater number150
856Friends Pairing Problem150
857Can Place Flowers LeetCode Solution150
858Make Two Arrays Equal by Reversing Sub-arrays Leetcode Solution150
859Binary Search Tree Search and Insertion150
860Subset with sum divisible by m150
861Partition List Leetcode Solution150
862Guess Number Higher or Lower LeetCode Solution149
863Permutation Coefficient149
864Missing Element in Sorted Array LeetCode Solution149
865Find All Possible Recipes from Given Supplies LeetCode Solution149
866Minimum Sum Path in a Triangle149
867Identify and Mark Unmatched Parenthesis in an Expression149
868Range LCM Queries149
869Brightest Position on Street LeetCode Solution149
870Clone Graph LeetCode Solution149
871Subsequence of Size K With the Largest Even Sum LeetCode Solution149
872Balanced Expression with Replacement149
873Number of Days Between Two Dates LeetCode Solution149
874Count Negative Numbers in a Sorted Matrix LeetCode Solution149
875Matrix Chain Multiplication149
876Find the Only Repetitive Element Between 1 to N-1149
877Sorted Array to Balanced BST149
878Count Distinct Elements in Every Window of Size K149
879Check whether a given Binary Tree is Complete or not149
880GCDs of given index ranges in an array148
881Repeated Substring Pattern LeetCode Solution148
882Union and Intersection of two Linked Lists148
883An Interesting Method to generate Binary Numbers from 1 to n148
884Destination City Leetcode Solution148
885Range sum queries without updates148
886Count ways to reach the nth stair using step 1, 2 or 3148
887Time Based Key-Value Store LeetCode Solution148
888Diagonal Traverse LeetCode Solution148
889Best Time to Buy and Sell Stock with Transaction Fee Leetcode Solution148
890Check if stack elements are pairwise consecutive148
891Find Common Characters Leetcode Solution148
892Spiral Matrix III LeetCode Solution147
893Water Bottles Leetcode Solution147
894Rearrange an Array Such that arr[i] is equal to i147
895Distinct adjacent elements in an array147
896Diagonal Traversal LeetCode Solution147
897Shortest Word Distance Leetcode Solution147
898Design Browser History LeetCode Solution147
899Guess Number Higher or Lower II147
900Convert Sorted List to Binary Search Tree147
901Three way partitioning of an array around a given range147
902Check if an Array is Stack Sortable147
903BFS for Disconnected Graph147
904Averages of Levels in Binary Tree147
905Delete And Earn147
906Lemonade Change Leetcode Solution147
907K’th Largest Element in BST when modification to BST is not allowed147
908Find distance between two nodes of a Binary Tree147
909Insert Delete GetRandom147
910Set Matrix Zeroes Leetcode Solution146
911Construct Complete Binary Tree from its Linked List Representation146
912Least Number of Unique Integers after K Removals Leetcode Solution146
913Minimum sum of multiplications of n numbers146
914Rearrange Spaces Between Words Leetcode Solution146
915Robot Bounded In Circle LeetCode Solution146
916Maximum Score After Splitting a String Leetcode Solution146
917Vertical sum in a given binary tree146
918Daily Temperatures Leetcode Solution146
919Special Positions in a Binary Matrix Leetcode Solution146
920Queue using Stacks146
921Check if the given array can represent Level Order Traversal of Binary Search Tree145
922Dividing Array into Pairs With Sum Divisible by K145
923Find all permuted rows of a given row in a matrix145
924Alien Dictionary145
925Construct the Rectangle Leetcode Solution145
926Iterative Postorder Traversal Using Two Stacks145
927Rearrange Array such that arr[i] >= arr[j] if i is even and arr[i] <= arr[j] if i is odd and j < i145
928Number of Distinct Islands Leetcode Solution145
9293 Sum144
930Largest area rectangular sub-matrix with equal number of 1’s and 0’s144
931Maximum Subarray Sum Excluding Certain Elements144
932Palindrome Partitioning Leetcode Solution144
933Count Subarrays with Same Even and Odd Elements144
934Merge Two Sorted Lists Leetcode144
935Lexicographical Numbers Leetcode Solution144
936Binary Tree Longest Consecutive Sequence LeetCode Solution144
937Construct BST from its given Level Order Traversal144
938Split Array Into Consecutive Subsequences144
9394Sum144
940A program to check if a binary tree is BST or not144
941Print Fibonacci sequence using 2 variables144
942Remove Duplicates from Sorted List II LeetCode Solution143
943Stone Game II Leetcode143
944Minimum Height Trees LeetCode Solution143
945Number of Equivalent Domino Pairs Leetcode Solution143
946Check if any two intervals overlap among a given set of intervals143
947Strongly Connected Component143
948Difference Array | Range update query in O(1)143
949Three Consecutive Odds Leetcode Solution143
950Queries for GCD of all numbers of an array except elements in a given range143
951Sliding Window Maximum143
952Maximum Frequency Stack Leetcode Solution143
953Median of Two Sorted Arrays143
954Create Maximum Number143
955Longest Palindromic Subsequence143
956Analyze User Website Visit Pattern LeetCode Solution142
957All Unique Triplets that Sum up to a Given Value142
958Can Make Arithmetic Progression From Sequence Leetcode Solution142
959Collect maximum points in a grid using two traversals142
960Infix to Postfix142
961My Calendar I LeetCode Solution142
962Trim a Binary Search Tree142
963Maximize Sum of Array after K Negations Leetcode Solution142
964Count Submatrices With All Ones LeetCode Solution141
965Shuffle 2n integers as a1-b1-a2-b2-a3-b3-..bn without using extra space141
966Merging Intervals141
967Find postorder traversal of BST from preorder traversal141
968Count Primes in Ranges141
969Intersection of Two Linked Lists LeetCode Solution141
970Binary array after M range toggle operations141
971Find the Difference Leetcode Solution141
972Maximum Product Subarray141
973Kth Smallest Element in a BST Leetcode Solution141
974Minesweeper LeetCode Solution141
975Unique Paths II141
976Count pair with Given Sum140
977Find Maximum of Minimum for Every Window Size in a Given Array140
978The Painter’s Partition Problem140
979Longest Nice Substring LeetCode Solution140
980K Closest Points to Origin Leetcode Solution140
981Length of Longest Fibonacci Subsequence140
982Word Break140
983Reverse Nodes in K-Group140
984Boundary Traversal of binary tree140
985Height of a generic tree from parent array140
986Pattern Occurrences using Stack140
987Count subarrays where second highest lie before highest140
988Climbing stairs140
989Symmetric Tree140
990Sign of the Product of an Array LeetCode Solution140
991Largest Number Leetcode Solution139
992Product of Array Except Self LeetCode Solution139
993Largest divisible pairs subset139
994Asteroid Collision LeetCode Solution139
995Friends Of Appropriate Ages LeetCode Solution139
996Level Order Traversal of Binary Tree139
997Newman-Conway Sequence139
998Largest Substring Between Two Equal Characters Leetcode Solution139
999Binary Search Tree Delete Operation139
1000Check If a Word Occurs As a Prefix of Any Word in a Sentence Leetcode Solution139
1001Maximum length subsequence with difference between adjacent elements as either 0 or 1139
1002Valid Boomerang Leetcode Solution139
1003Palindrome Partitioning139
1004Construction of Longest Increasing Subsequence (N log N)138
1005The Maze III LeetCode Solution138
1006Graph Valid Tree LeetCode Solution138
1007Merge Sort138
1008Maximum subsequence sum such that no three are consecutive138
1009Find Duplicate Subtrees138
1010Double the first element and move zero to end138
1011Scramble String LeetCode Solution138
1012Maximum Length of Repeated Subarray138
1013Segment Tree138
1014Minimum Index Sum of Two Lists138
1015Find number of pairs in an array such that their XOR is 0138
1016Breadth First Search (BFS) for a Graph138
1017Insertion in a Binary Tree138
1018Boolean Parenthesization Problem138
1019Maximum Number of Ways to Partition an Array LeetCode Solution138
1020Shortest Completing Word Leetcode Solution138
1021Number Of Longest Increasing Subsequence138
1022String Matching in an Array Leetcode Solution137
1023Compute nCr % p137
1024Rearrange an array such that ‘arr[j]’ becomes ‘i’ if ‘arr[i]’ is ‘j’137
1025Find the First Circular Tour that visits all the Petrol Pumps137
1026Maximum Sum of 3 Non-Overlapping Subarrays137
1027Construct Binary Tree from given Parent Array representation137
1028Depth First Search (DFS) for a Graph137
1029Decrypt String from Alphabet to Integer Mapping Leetcode Solution137
1030Maximum Product of Indexes of Next Greater on Left and Right137
1031Kill Process LeetCode Solution137
1032Number of palindromic paths in a matrix137
1033Longest subsequence such that difference between adjacents is one137
1034Rearrange array such that even positioned are greater than odd137
1035Binary Search Tree137
1036Ugly Numbers137
1037Serialize and Deserialize Binary Tree136
1038Next Greater Element III LeetCode Solution136
1039Maximum weight transformation of a given string136
1040Design Hit Counter LeetCode Solution136
1041Partition Equal Subset Sum136
1042Count minimum steps to get the given desired array136
1043First missing positive136
1044Build an Array With Stack Operations Leetcode Solution136
1045K maximum sums of overlapping contiguous sub-arrays136
1046Make The String Great Leetcode Solution136
1047Level order traversal using two Queues136
1048Iterative Depth First Traversal of Graph136
1049Morris Inorder Traversal136
1050Add two numbers135
1051Balanced Binary Tree135
1052Maximum difference between frequency of two elements such that element having greater frequency is also greater135
1053Advantages of BST over Hash Table135
1054Kth Smallest Element in a Sorted Matrix LeetCode Solution135
1055Available Captures for Rook Leetcode Solution135
1056Custom Sort String Leetcode Solution135
1057Invalid Transactions LeetCode Solution135
1058Bitwise AND of Numbers Range LeetCode Solution135
1059Path Sum II LeetCode Solution134
1060Employee Importance LeetCode Solution134
1061Validate Binary Search Tree134
1062Count pairs from two sorted arrays whose sum is equal to a given value x134
1063Lowest Common Ancestor133
1064Generate Parentheses Leetcode Solution133
1065Determine Whether Matrix Can Be Obtained By Rotation LeetCode Solution133
1066Super Ugly Number133
1067Rearrange array such that even index elements are smaller and odd index elements are greater133
1068Ugly Number II LeetCode Solution133
1069Recover Binary Search Tree Leetcode Solution133
1070Find a Peak Element II LeetCode Solution133
1071Implement Trie (Prefix Tree) Leetcode Solution133
1072Defanging an IP Address LeetCode Solution133
1073Move all negative elements to end in order with extra space allowed133
1074Minimum Size Subarray Sum133
1075Search in Sorted Rotated Array132
1076Regular Expression Matching Regular Expression Matching LeetCode Solution132
1077Binary Tree Right Side View LeetCode Solution132
1078Find whether a subarray is in form of a mountain or not132
1079Largest BST Subtree LeetCode Solution132
1080Find Peak Element132
1081Number of Closed Islands Leetcode Solution132
1082Populating Next Right Pointers in Each Node Leetcode Solution132
1083Root to Leaf path with target sum Leetcode Solutions132
1084Subarrays with K Different Integers Leetcode Solution132
1085Remove Duplicates from Sorted Array II Leetcode Solution132
1086Smallest Common Region Leetcode Solution131
1087Combination Sum IV LeetCode Solution131
1088Remove Palindromic Subsequences Leetcode Solution131
1089Count Largest Group Leetcode Solution131
1090Types of Binary Tree131
1091Number of Students Doing Homework at a Given Time Leetcode Solution131
1092Find Smallest Range Containing Elements from k Lists131
1093Longest Bitonic Subsequence131
1094Day of the Year Leetcode Solution131
1095Binary Tree Data Structure130
1096Kth Smallest Product of Two Sorted Arrays LeetCode Solution130
1097Minimum Absolute Difference in BST Leetcode Solution130
1098Print all triplets in sorted array that form AP130
1099Consecutive Characters LeetCode Solution130
1100Serialize and Deserialize Binary Tree LeetCode Solution130
1101Clone a Binary Tree with Random Pointers130
1102Maximize Distance to Closest Person LeetCode Solution130
1103Number of siblings of a given Node in n-ary Tree130
1104Next Permutation Leetcode Solution129
1105Path Sum129
1106Cutting a Rod129
1107Construct K Palindrome Strings LeetCode Solution129
1108Palindrome Permutation LeetCode Solution129
1109Print Next Greater Number of Q queries129
1110Increasing Triplet Subsequence LeetCode Solution129
1111Find maximum difference between nearest left and right smaller elements129
1112Remove duplicates from sorted array129
1113Find the minimum distance between two numbers129
1114Distinct Subsequences129
1115Level of Each node in a Tree from source node129
1116Convert BST into a Min-Heap without using array129
1117Sum of Even Numbers After Queries129
1118Construct Binary Tree from Preorder and Postorder Traversal LeetCode Solution128
1119Constant time range add operation on an array128
1120Minimum sum of squares of character counts in a given string after removing k characters128
1121Divisible Pairs Counting128
1122Iterative method to find ancestors of a given binary tree128
1123Reformat The String Leetcode Solution128
1124Find Three Element From Different Three Arrays Such That a + b + c = sum128
1125Mean of Array After Removing Some Elements Leetcode Solution128
1126Bottom View of a Binary Tree128
1127Maximum Product Subarray128
1128Valid Tic-Tac-Toe State LeetCode Solution128
1129Third Maximum Number Leetcode Solution128
1130Write Code to Determine if Two Trees are Identical127
1131Thousand Separator Leetcode Solution127
1132Maximum Product of Splitted Binary Tree LeetCode Solution127
1133Longest Increasing Consecutive Subsequence127
1134Prime Palindrome LeetCode Solution127
1135Longest Subarray of 1’s After Deleting One Element LeetCode Solution127
1136Products of ranges in an array127
1137Delete Nodes and Return Forest Leetcode Solution127
1138Minimum Score Triangulation of Polygon Leetcode Solution127
1139Print Right View of a Binary Tree127
1140Swap Nodes In Pairs126
1141Queries for Number of Distinct Elements in a Subarray126
1142Find maximum length Snake sequence126
1143Palindromic Substrings Leetcode Solution126
1144Search Insert Position126
1145Moser-de Bruijn Sequence126
1146Cells with Odd Values in a Matrix LeetCode Solution126
1147Search an Element in Sorted Rotated Array126
1148Merge two BSTs with limited extra space125
1149Red-Black Tree Introduction125
1150Maximum Binary Tree125
1151Topological Sorting125
1152Subset Sum Problem in O(sum) space125
1153Maximize sum of consecutive differences in a circular array124
1154Print modified array after executing the commands of addition and subtraction124
1155Check Array Formation Through Concatenation Leetcode Solution124
1156Closest Binary Search Tree Value Leetcode Solution124
1157Find Two Non-overlapping Sub-arrays Each With Target Sum LeetCode Solution124
1158Priority Queue124
1159Diameter of N-Ary Tree LeetCode Solution124
1160Transform a BST to Greater sum Tree124
1161Bus Routes Leetcode Solution124
1162Kth Smallest Number in Multiplication Table Leetcode Solution124
1163Minimum Sideway Jumps LeetCode Solution123
1164Web Crawler LeetCode Solution123
1165Decision Tree123
1166Remove Max Number of Edges to Keep Graph Fully Traversable Leetcode Solution123
1167Golomb sequence123
1168Possible Bipartition LeetCode Solution123
1169Search Suggestions System LeetCode Solution123
1170Find Largest Value in Each Tree Row LeetCode Solution123
1171Minimum Moves to Equal Array Elements LeetCode Solution122
1172Binary Tree to Binary Search Tree Conversion122
1173Count even length binary sequences with same sum of first and second half bits122
1174Find a sorted subsequence of size 3 in linear time122
1175Find the smallest binary digit multiple of given number122
1176K’th Largest element in BST using constant extra space122
1177Minimum Cost to Move Chips to The Same Position LeetCode Solution122
1178Longest Repeated Subsequence122
1179Compare Strings by Frequency of the Smallest Character Leetcode Solution122
1180Rotate Array122
1181First Bad Version121
1182Reverse a Path in BST using Queue121
1183Factorial Trailing Zeroes LeetCode Solution121
1184Given a binary tree, how do you remove all the half nodes?121
1185Swapping Nodes in a Linked List Leetcode Solution121
1186Graph and its representation121
1187Decrease Elements To Make Array Zigzag LeetCode Solution121
1188Matchsticks to Square Leetcode Solution121
1189Count Pairs Whose Products Exist in Array120
1190Contiguous Array LeetCode Solution120
1191Convert Sorted Array to Binary Search Tree LeetCode Solutions120
1192Lowest Common Ancestor in Binary Search Tree120
1193Filter Restaurants by Vegan-Friendly, Price and Distance Leetcode Solution120
1194Reformat Date LeetCode Solution120
1195Maximum sum of pairs with specific difference120
1196Number of Orders in the Backlog Leetcode Solution120
1197Queue Reconstruction by Height120
1198Maximum number of segments of lengths a, b and c120
1199Maximum sum bitonic subarray119
1200How to print maximum number of A’s using given four keys119
1201Concatenation of Array LeetCode Solution119
1202Closest Leaf in a Binary Tree LeetCode Solution119
1203Valid Triangle Number119
1204Maximum Depth Of Binary Tree119
1205Range Queries for Longest Correct Bracket Subsequence119
1206Sum of Left Leaves LeetCode Solution119
1207Path Crossing Leetcode Solution119
1208Moving Stones Until Consecutive Leetcode Solution118
1209BST to a Tree with Sum of all Smaller Keys118
1210Minimum Swaps To Make Sequences Increasing LeetCode Solution118
1211Champagne Tower LeetCode Solution118
1212Lowest Common Ancestor of a Binary Tree Leetcode Solution118
1213Write a function to get the intersection point of two Linked Lists117
1214Guess The Word117
1215Array Queries for multiply replacements and product117
1216Perfect Squares LeetCode Solution117
1217Integer Break LeetCode Solution117
1218Kth Smallest Element in a BST117
1219Divide Two Integers Leetcode Solution117
1220LRU Cache Leetcode Solution117
1221Mean of range in array116
1222Convert Integer to the Sum of Two No-Zero Integers Leetcode Solution116
1223Check if all levels of two Binary Tree are anagrams or not116
1224Replace two consecutive equal values with one greater116
1225Sliding Window Median Leetcode Solution116
1226Valid Perfect Square LeetCode Solution116
1227Maximize Elements Using Another Array116
1228Maximum Value at a Given Index in a Bounded Array LeetCode Solution116
1229Queries on Probability of Even or Odd Number in given Ranges116
1230Maximum sum of a path in a Right Number Triangle116
1231Flatten 2D Vector LeetCode Solution116
1232Design Skiplist LeetCode Solution115
1233Range Sum Query using Sparse Table115
1234Maximum Array from Two given Arrays Keeping Order Same115
1235New 21 Game115
1236Arithmetic Slices II – Subsequence LeetCode Solution115
1237Power of Two115
1238Check Completeness of a Binary Tree LeetCode Solution114
1239Check for Identical BSTs without building the trees114
1240Find Minimum in Rotated Sorted Array II LeetCode Solution114
1241Longest Common Prefix Using Word by Word Matching114
1242The kth Factor of n Leetcode Solution114
1243Bold Words in String LeetCode Solution114
1244Graph Cloning114
1245Check if each internal node of a BST has exactly one child114
1246Parallel Courses II LeetCode Solution113
1247Largest Plus Sign Leetcode Solution113
1248Maximum Product Subarray113
1249Print modified array after multiple array range increment operations113
1250Count Subsets Having Distinct Even Numbers113
1251Find k-th smallest element in BST (Order Statistics in BST)113
1252Contiguous Array113
1253Symmetric Tree LeetCode Solution Leetcode Solution112
1254Print n terms of Newman-Conway Sequence112
1255Find minimum number of merge operations to make an array palindrome112
1256Print Ancestors of a Given Binary Tree Node Without Recursion112
1257Image Overlap LeetCode Solution111
1258Merge k Sorted Lists Leetcode Solution111
1259Missing Number111
1260Check if two nodes are on the same path in a Tree111
1261Minimum Remove to Make Valid Parentheses LeetCode Solution111
1262Verify Preorder Serialization of a Binary Tree110
1263Count and Toggle Queries on a Binary Array110
1264Number of elements less than or equal to a given number in a given subarray110
1265Smallest Range II Leetcode Solution110
1266Excel Sheet Column Title LeetCode Solution110
1267Next greater element109
1268Minimum Time to Collect All Apples in a Tree LeetCode Solution108
1269Orderly Queue LeetCode Solution108
1270Check If a String Can Break Another String Leetcode Solution108
1271Palindrome Partitioning108
1272Min Cost Climbing Stairs LeetCode Solution107
1273Koko Eating Bananas LeetCode Solution107
1274Different Ways to Add Parentheses Leetcode Solution107
1275Longest Substring Without Repeating Characters Leetcode Solution106
1276Peeking Iterator LeetCode Solution106
1277Largest Submatrix With Rearrangements LeetCode Solution106
1278Check in binary array the number represented by a subarray is odd or even106
1279Check if X can give change to every person in the Queue105
1280Newman–Shanks–Williams prime105
1281Merge Sorted Array104
1282Queries for Decimal Values of Subarrays of a Binary Array104
1283Range Minimum Query (Square Root Decomposition and Sparse Table)103
1284Array Nesting Leetcode Solution102
1285Encoded String With Shortest Length LeetCode Solution102
1286Arranging Coins Leetcode Solution101
1287Maximum Sum Increasing Subsequence101
1288Find maximum average subarray of k length101
1289Maximum product of an increasing subsequence100
1290Number of indexes with equal elements in given range100
1291Check given array of size n can represent BST of n levels or not100
1292Convert a BST to a Binary Tree such that sum of all greater keys is added to every key100
1293Minimum Total Space Wasted With K Resizing Operations LeetCode Solution99
1294Convert to Base -2 LeetCode Solution99
1295Find the Winner of the Circular Game LeetCode Solution98
1296Minimum Number of People to Teach LeetCode Solution98
1297Continuous Subarray Sum LeetCode Solution98
1298Random Pick Index LeetCode Solution98
1299Binary Tree to Binary Search Tree Conversion using STL set97
1300Jump Game IV LeetCode Solution97
1301Reach a Number LeetCode Solution97
1302Add Two Numbers II Leetcode Solution97
1303Number of Subsequences That Satisfy the Given Sum Condition LeetCode solution96
1304Queries on XOR of greatest odd divisor of the range96
1305Vertical Order Traversal of Binary Tree LeetCode Solution96
1306Palindrome Number LeetCode Solution95
1307Insert Delete GetRandom O(1) Leetcode Solution94
1308Minimum Possible Integer After at Most K Adjacent Swaps On Digits LeetCode Solution94
1309Design Underground System Leetcode Solution90
1310Print Maximum Length Chain of Pairs89
1311Detect Capital Leetcode Solution88
1312Shifting Letters LeetCode Solution88
1313Design A Leaderboard Leetcode Solution87
1314Substring with Concatenation of All Words Leetcode Solution84
1315Top K Frequent Elements LeetCode Solution83
1316Minimum Swaps to Group All 1’s Together Leetcode Solution83
1317Count Sub Islands LeetCode Solution82
1318Minimum Path Sum Leetcode Solution81
1319Binary Tree Inorder Traversal LeetCode Solution81
1320Longest Common Subsequence LeetCode Solution78
1321Find the Town Judge LeetCode Solution77
1322Odd Even Linked List Leetcode Solution77
1323Maximum Population Year LeetCode Solution77
1324Find the Town Judge LeetCode Solution76
1325Decode String Leetcode Solution76
1326Best Meeting Point LeetCode Solution76
1327Shortest Unsorted Continuous Subarray LeetCode Solution75
1328Sum Root to Leaf Numbers LeetCode Solution74
1329Design Add and Search Words Data Structure LeetCode Solution71
1330Rectangle Overlap LeetCode Solution71
1331Maximum Population Year LeetCode Solution71
1332Flatten Binary Tree to Linked List LeetCode Solution69
1333Score of Parenthesis LeetCode Solution68
1334Stone Game IV LeetCode Solution67
1335Insert into a Sorted Circular Linked List LeetCode Solution67
1336Range Sum Query 2D – Immutable LeetCode Solution66
1337Reveal Cards In Increasing Order Leetcode Solution65
1338Valid Triangle Number LeetCode Solution64
1339Is Graph Bipartite? LeetCode Solution63
1340Divide Chocolate LeetCode Solution57
1341Step-By-Step Directions From a Binary Tree Node to Another LeetCode Solution52
1342Reverse Integer Leetcode Solution47
1343Range Sum of BST LeetCode Solution46
1344Sort Colors LeetCode Solution43
1345Find K Closest Elements LeetCode Solution43
1346Maximum Side Length of a Square with Sum Less than or Equal to Threshold LeetCode Solution40
1347Rotate String LeetCode Solution40
1348Excel Sheet Column Number LeetCode Solution39
1349Maximum Size Subarray Sum Equals k Leetcode Solution20
1350H-Index Leetcode Solution20
1351High Five LeetCode Solution19
1352Camelcase Matching Leetcode Solution18
1353Monotonic Array Leetcode Solution15
1354Group Shifted Strings Leetcode Solution13
1355Insert Delete GetRandom O(1) – Duplicates allowed LeetCode Solution12
1356Unique Binary Search Trees LeetCode Solution11
1357Peak Index in a Mountain Array LeetCode Solution11
1358Valid Triangle Number LeetCode Solution10
1359Isomorphic Strings LeetCode Solution9
1360Next Greater Element I Leetcode Solution9
1361Flatten Binary Tree to Linked List LeetCode Solution8
1362Swim in Rising Water LeetCode Solution7
1363Minimum Number of Arrows to Burst Balloons LeetCode Solution4
1364Sentence Screen Fitting LeetCode Solution1
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