874. Walking Robot Simulation
A robot on an infinite XY-plane starts at point (0, 0) facing north. The robot can receive a sequence of these three […]
Count Ways To N’Th Stair(Order Does Not Matter)
There are n stairs, and a person standing at the bottom wants to reach the top. The person can climb either 1 stair
1945. Sum of Digits of String After Convert
You are given a string s consisting of lowercase English letters, and an integer k. First, convert s into an integer by replacing each letter with
Minimum Number Of Deletions And Insertions
Given two strings str1 and str2. The task is to remove or insert the minimum number of characters from/in str1 so as to transform it into str2. It could be possible
1894. Find the Student that Will Replace the Chalk
There are n students in a class numbered from 0 to n – 1. The teacher will give each student a problem starting with the
Minimum Cost Path
Given a square grid of size N, each cell of which contains an integer cost that represents a cost to traverse through that
2022. Convert 1D Array Into 2D Array
You are given a 0-indexed 1-dimensional (1D) integer array original, and two integers, m and n. You are tasked with creating a 2-dimensional (2D) array with
Max sum path in two arrays
Given two sorted arrays of distinct integers arr1 and arr2. Each array may have some elements in common with the other array. Find the maximum sum of a
140. Word Break II
Given a string s and a dictionary of strings wordDict, add spaces in s to construct a sentence where each word is a valid dictionary
Sorted subsequence of size 3
You are given an array arr, you need to find any three elements in it such that arr[i] < arr[j] <
2699. Modify Graph Edge Weights
You are given an undirected weighted connected graph containing n nodes labeled from 0 to n – 1, and an integer array edges where edges[i] = [ai, bi, wi] indicates that there
N-Queen Problem
The n-queens puzzle is the problem of placing n queens on a (n×n) chessboard such that no two queens can attack each other.Given an integer n,