Easy | Count subarrays with equal number of 1’s and 0’s | Problem Statement The problem “Count subarrays with equal number of 1’s and 0’s” read more |

Medium | Palindrome Substring Queries | Problem Statement The problem “Palindrome Substring Queries” states that you are given read more |

Easy | Elements to be added so that all elements of a range are present in array | Problem Statement “Elements to be added so that all elements of a range are present in read more |

Easy | Count subarrays having total distinct elements same as original array | Problem Statement “Count subarrays having total distinct elements same as original read more |

Medium | Cuckoo Hashing | Problem Statment Cuckoo Hashing is a method used to solve the problem when a collision occurs in a read more |

Easy | Subarrays with distinct elements | Problem Statement “Subarrays with distinct elements” states that you are given an array read more |

Medium | Count quadruples from four sorted arrays whose sum is equal to a given value x | Problem Statement Problem “Count quadruples from four sorted arrays whose sum is equal to a read more |

Easy | Count pairs from two linked lists whose sum is equal to a given value | Problem Statement Problem “Count pairs from two linked lists whose sum is equal to a given read more |

Easy | Find sum of non-repeating elements (distinct) elements in an array | Problem Statement Given an integer array, A[] with repeated elements, the “Find sum of read more |

Easy | Find distinct elements common to all rows of a matrix | Problem Statement We are given a matrix of all the integers. The problem “Find distinct read more |

Easy | Numbers with prime frequencies greater than or equal to k | Problem Statement Problem “Numbers with prime frequencies greater than or equal to k” read more |

Easy | Convert an array to reduced form | Problem Statement Problem “Convert an array to reduced form” states that you are given read more |

Medium | Find pairs with given sum such that elements of pair are in different rows | Problem Statement “Find pairs with given sum such that elements of pair are in different read more |

Easy | Common elements in all rows of a given matrix | Problem Statement “Common elements in all rows of a given matrix” problem state that, read more |

Easy | Find all permuted rows of a given row in a matrix | Problem Statement Find all permuted rows of a given row in a matrix states that you are given a read more |

Easy | Given two unsorted arrays find all pairs whose sum is x | Problem Statement Given two unsorted arrays, find all pairs whose sum is x problem states that you read more |

Easy | Sort elements by frequency | Problem Statement You are given an array of integers, some numbers are repeated in it. The problem read more |

Easy | Find the first repeating element in an array of integers | Problem Statement Find the first repeating element in an array of integers problem states that you read more |

Easy | Count items common to both the lists but with different prices | Problem Statement You are given two lists. Each of which index contains the name of the item and read more |

Easy | Minimum number of subsets with distinct elements | Problem Statement Suppose you have an array of integers of size n. The problem statement asks to read more |

Easy | Longest Span with same Sum in two Binary arrays | Problem Statement You are given two arrays of which each contains binary number. The problem read more |

Find Number of Employees Under every Employee | HashMaps are one of the most useful data structures. Find the number of employees under every read more | |

Smallest Element Repeated Exactly K Times | We are given an array A[] on size n. We have to find the smallest element that is repeated exactly read more | |

K-th Distinct Element in an Array | You are given an integer array A, print k-th distinct element in an array. The given array may read more | |

Cumulative Frequency of Count of Each Element in an Unsorted Array | We are given an unsorted array. The task is to calculate the cumulative frequency of count of each read more | |

Group Words With Same Set of Characters | In Group words with same set of characters problem, we have given a list of words with lower cases. read more | |

First non Repeating Element | We are given an array A. We have to find the first non repeating element in the array. Example read more | |

Second Most Repeated Word in a Sequence | Given a sequence of strings, the task is to find out the second most repeated (or frequent) word or read more | |

Print All Distinct Elements of a Given Integer Array | Given an integer array, print all distinct elements in the array. The given array may contain read more | |

Pair of Positive Negative Values in an Array | In pair of positive negative values in an array problem we have given an array A of distinct read more | |

Remove Minimum Number of Elements Such That no Common Element Exist in both Array | Given two arrays A and B consisting of n and m elements respectively. Remove minimum number of read more | |

Maximum Occurring Character | Given a string of size n containing lower case letters. We need to find the maximum occurring read more | |

Count Pairs With Given Sum | Given an integer array of size n, and an integer ‘K’, you need to count the number of read more | |

Most Frequent Element in an Array | You are given an array of integers. The problem statement says that you have to find out the most read more | |

Find Pair with Greatest Product in Array | Given an array A of N elements. The task is to find the greatest number S which is present in the read more | |

Smallest Subarray With all Occurrences of a Most Frequent Element | In the smallest subarray with all occurrences of a most frequent element problem, we have given an read more | |

Find Top K (or Most Frequent) Numbers in a Stream | In find top k (or most frequent) numbers in a stream problem, we have given an integer array read more | |

Next Greater Frequency Element | In the next greater frequency element problem, we have given an array a[ ] of size n containing read more | |

K Empty Slots LeetCode | K Empty Slots is a very famous problem on LeetCode. The problem statement is like that- A garden is read more | |

Change the Array into Permutation of Numbers From 1 to N | In this problem, we have given an array A of n elements. We need to change the array into a read more |