Problem statement In the problem ” Find Lucky Integer in an Array ” we are given an array where an integer is called lucky if its frequency in the array is equal to its value. Our task is to return the largest lucky number. If no such number exists we …
Problem Statement In this problem, we are given an alphanumeric string i.e. the string has only lowercase alphabets (a-z) and digits(0-9). We are required to return any permutation of this string, in which there is no consecutive alphabet in it or no consecutive digits. If no such permutation is there, …
Problem statement In the problem “Find the Difference” we are given two strings s and t. String t is produced by randomly stuffing the characters of string s and adding one character at a random position. our task is to find out the character which was added in string t. …
In this problem, we are given the root node of a Binary Search Tree containing integer values and an integer value of a node that we have to add in the Binary Search Tree and return its structure. After inserting the element into the BST, we have to print its …
Linked lists are quite like arrays in their linear properties. We can merge two sorted arrays to form an overall sorted array. In this problem, we have to merge two sorted linked lists in place to return a new list which contains elements of both lists in a sorted fashion. Example …
In this problem, we have to find the sum of all left leaves in a binary tree. A leaf that is called a “Left Leaf” if it is a left child of any node in the tree. Example 2 / \ 4 7 / \ 9 4 Sum is 13 …
Problem Statement In this problem, we are given a length. We have to generate a string that has all characters an odd number of times. For example, aaaaab is a valid string because count(a)=5 and count(b)=1. But, aaabbc is not a valid string here because count(b)=2 which is an even …
The problem Permutations Leetcode Solution provides a simple sequence of integers and asks us to return a complete vector or array of all the permutations of the given sequence. So, before going into solving the problem. We should be familiar with permutations. So, a permutation is nothing but an arrangement …
In this problem, we need to find the length of the shortest path from the root to any leaf in a given binary tree. Note that the “length of the path” here means the number of nodes from the root node to the leaf node. This length is called Minimum …
We are given an integer and the goal is to check whether the integer is a power of two, that is, it can be represented as some whole power of ‘2‘. Example 16 Yes 13 No Approach A trivial solution can be: Check if all prime factors of the integer …