1598. Crawler Log Folder
The Leetcode file system keeps a log each time some user performs a change folder operation. The operations are described below: “../” : […]
Largest square formed in a matrix
Given a binary matrix mat of size n * m, find out the maximum length of a side of a square sub-matrix with all 1s. Examples: Input:
131. Palindrome Partitioning
Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome
129. Sum Root to Leaf Numbers
You are given the root of a binary tree containing digits from 0 to 9 only. Each root-to-leaf path in the tree represents a number. For
100. Same Tree
Given the roots of two binary trees p and q, write a function to check if they are the same or not. Two
94. Binary Tree Inorder Traversal
Given the root of a binary tree, return the inorder traversal of its nodes’ values. Example 1: Input: root = [1,null,2,3] Output: [1,3,2]
91. Decode Ways
A message containing letters from A-Z can be encoded into numbers using the following mapping: ‘A’ -> “1” ‘B’ -> “2” … ‘Z’ ->
85. Maximal Rectangle
Given a rows x cols binary matrix filled with 0‘s and 1‘s, find the largest rectangle containing only 1‘s and return its area. Example 1: Input: matrix =
1701. Average Waiting Time
There is a restaurant with a single chef. You are given an array customers, where customers[i] = [arrivali, timei]: arrivali is the arrival
Closest Three Sum
Given an array, arr of integers, and another number target, find three integers in the array such that their sum is closest to
1823. Find the Winner of the Circular Game
There are n friends that are playing a game. The friends are sitting in a circle and are numbered from 1 to n in clockwise order. More
Search in Rotated Sorted Array
Given a sorted (in ascending order) and rotated array arr of distinct elements which may be rotated at some point and given