In Find unique character in a string problem, we have given a string containing only lower case alphabets(a-z). We need to find the first non-repeating character in it and print the index. if no such character exists print -1. Input Format Only a single line containing string. Output Format Print …
Valid Sudoku is a problem in which we have given a 9*9 Sudoku board. We need to find the given Sudoku is valid or not on the basis of the following rules: Each row must contain the digits 1-9 without repetition. Each column must contain the digits 1-9 without repetition. Every of the 9 3×3 sub-boxes …
Palindrome Partitioning is a DP problem. In this problem, Given a string S. Partition S such that every substring of the partition is a palindrome. We need to print the minimum cuts needed for a palindrome partitioning of S. Input Format Only a single line containing string S. Output Format …
Add two numbers is a problem in which we have given two non-empty linked list representing a non-negative integer. The digit are store in reverse order and every node must contain only a single digit. Add the two numbers and print the result by using a linked list. Input Format …
Firstly we have to find the total number of counts to form a unique binary search tree. After it, we construct all possible unique BST. First of all, we have to know the construction of BST. In a Binary Search Tree, the nodes present in the left subtree wrt. any …
Sieve of Eratosthenes is an algorithm in which we find out the prime numbers less than N. Here N is an integer value. This is an efficient method to find out the prime numbers to a limit. By using this we can find out the prime numbers till 10000000. Here …
Guess The Word is an interactive problem. An interactive problem means the data which is given to us is not predetermined. We can print values or call the specific function to interact or get more information regarding the solution. After each step, we also need to FLUSH the buffer to …
New 21 Game is a problem that is based on the card game “21”. The problem statement of this problem is simple. We are initially having 0 points. If the value of our current points is less than K points then we draw numbers. During each draw we gain an …
First, we need to know what actually Preorder of a Binary Tree is. Preorder is a type of Binary Tree traversal. In this traversal first, we visit the node. After visiting traverse the left sub-tree first and then right sub-tree. Now, move to what we have to do in this …
Partition Equal Subset Sum is a problem in which we have given an array of positive numbers. We have to find out that can we divide it into two subsets such that the sum of elements in both sets is the same. Here it’s not necessary that the number of …