Word search is something like the word-finding puzzles at some time in our life. Today I bring to the table a modified crossword. My readers must be a bit perplexed as to what I am talking about. Without wasting any more time let us get to the problem statement Can …
We are given an array A[] on size n. We have to find the smallest element that is repeated exactly k times in the array. Example Input A[]= {1, 2 ,2 ,5 ,5 ,2 ,5} K=3 Output Smallest element with frequency K is: 2 Approach 1: Brute force Main idea …
Given two arrays A and B consisting of n and m elements respectively. Remove minimum number of elements such that no common element exist in both array and print the count of elements which removed. Example Input: A[]={ 1, 2, 1, 1} B[]= {1, 1} Output: Minimum elements to remove …
In sorting a queue without extra space problem we have given a queue, sort it using standard queue operations without extra space. Examples Input queue = 10 -> 7 -> 2 -> 8 -> 6 Output queue = 2 -> 6 -> 7 -> 8 -> 10 Input queue = …
In this problem we have given a binary tree, print its level order traversal in a spiral form. Examples Input Output 10 30 20 40 50 80 70 60 Naive Approach for Level order Traversal in Spiral Form The idea is to do a normal level order traversal using a …
In the Trapping Rain Water LeetCode problem, we have given N non-negative integers representing an elevation map and the width of each bar is 1. We have to find the amount of water that can be trapped in the above structure. Example Let’s understand that by an example For the …
Given a binary tree, print the zigzag level order traversal of its node values. (ie, from left to right, then right to left for the next level and alternate between). Example consider the binary tree given below Below is the zigzag level order traversal of the above binary tree Types …
Problem Statement In the “Transpose of a Matrix” problem, we have given a matrix. We need to find the transpose of the matrix and print it. Note: The transpose_of a matrix is a matrix whose rows are the columns and columns are the rows of the original_matrix. Input Format The …
Problem Statement In the “Check if string can become empty by recursively deleting given substring” problem we have given two strings “s” and “t”. We have to check if the given input string “s” can be deleted completely by deleting the given input sub-string “t” recursively. Note: Given sub-string should …
Problem Statement Given two arrays A and B, one array is a duplicate of the other except one element. The one element is missing from either A or B. we need to find the lost element from a duplicated array. Example 5 1 6 4 8 9 6 4 8 …