Problem Statement: The Maximum Size Subarray Sum Equals k Leetcode Solution – Given an integer array nums and integer k, return the maximum length of a subarray that sums to k. If there is not one, return 0 instead. Example: Input: nums = [1,-1,5,-2,3], k = 3 Output: 4 Explanation: The …
Problem Statement: H-Index Leetcode solution says that – Given an array of integers “citations” where citations[i] is the number of citations a researcher received for their ith paper, return researcher’s H-Index. If several H-Index values are present, return the maximum among them. Definition of H-Index: A scientist has an index …
Problem Statement: The High Five LeetCode Solution – Given a list of scores of different students named “item”, where the “item” has two fields item[0] represents the student’s id, and item[1] represents the student’s score eg. item[i]=[IDi, SCOREi] Return the answer as an array of pairs result, where result[j] = …
Range Sum of BST LeetCode Solution says that – Given the root the node of a binary search tree and two integers low and high, return the sum of values of all nodes with a value in the inclusive range [low, high]. Example 1: Input: root = [10,5,15,3,7,null,18], low = 7, high = 15 Output: 32 Explanation: …
Problem Statement: Step-By-Step Directions From a Binary Tree Node to Another LeetCode Solution – You are given the root of a binary tree with n nodes. Each node is uniquely assigned a value from 1 to n. You are also given an integer startValue representing the value of the start node s, and a different integer destValue representing the value of the destination …
Problem Statement Reverse Integer LeetCode Solution says that – Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-231, 231 – 1], then return 0. Assume the environment does not allow you to store 64-bit integers (signed or unsigned). Example 1: …
Problem Statement Rotate String LeetCode Solution – Given two strings s and goal, return true if and only if s can become goal after some number of shifts on s. A shift on s consists of moving the leftmost character of s to the rightmost position. For example, if s = “abcde”, then it will …
Problem Statement The Reveal Cards In Increasing Order Leetcode Solution – Given an integer Array named “deck”. In this deck of cards, every card has a unique integer. The integer on the i card is deck[i]. Order the deck in any order and all the cards start face down (unrevealed) …
Problem Statement Find K Closest Elements LeetCode Solution – Given a sorted integer array arr, two integers k and x, return the k closest integers to x in the array. The result should also be sorted in ascending order. An integer a is closer to x than an integer b if: |a – x| < |b – x|, or |a – x| == |b – …
Problem Statement Sort Colors LeetCode Solution – Given an array nums with n objects colored red, white, or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white, and blue. We will use the integers 0, 1, and 2 to represent the color red, white, and blue, respectively. …