摘要：
You are given two integers m and n, which represent the dimensions of a matrix. You are also given the head of a linked list of integers. Generate an 阅读全文
摘要：
You start at the cell (rStart, cStart) of an rows x cols grid facing east. The northwest corner is at the first row and column in the grid, and the so 阅读全文
摘要：
You are given the head of a linked list, which contains a series of integers separated by 0's. The beginning and end of the linked list will have Node 阅读全文
摘要：
You are given a 2D matrix grid of size m x n. You need to check if each cell grid[i][j] is: Equal to the cell below it, i.e. grid[i][j] == grid[i + 1] 阅读全文
摘要：
A distinct string is a string that is present only once in an array. Given an array of strings arr, and an integer k, return the kth distinct string p 阅读全文
摘要：
A swap is defined as taking two distinct positions in an array and swapping the values in them. A circular array is defined as an array where we consi 阅读全文
摘要：
Given an m x n matrix of distinct numbers, return all lucky numbers in the matrix in any order. A lucky number is an element of the matrix such that i 阅读全文
摘要：
You are given a binary array possible of length n. Alice and Bob are playing a game that consists of n levels. Some of the levels in the game are impo 阅读全文
摘要：
You are given a 2D integer array descriptions where descriptions[i] = [parenti, childi, isLefti] indicates that parenti is the parent of childi in a b 阅读全文
摘要：
There are n balls on a table, each ball has a color black or white. You are given a 0-indexed binary string s of length n, where 1 and 0 represent bla 阅读全文
摘要：
You have observations of n + m 6-sided dice rolls with each face numbered from 1 to 6. n of the observations went missing, and you only have the obser 阅读全文
摘要：
You are given a 0-indexed integer array nums having length n, an integer indexDifference, and an integer valueDifference. Your task is to find two ind 阅读全文
摘要：
You are given a 0-indexed integer array nums and an integer k. A subarray is called equal if all of its elements are equal. Note that the empty subarr 阅读全文
摘要：
The XOR total of an array is defined as the bitwise XOR of all its elements, or 0 if the array is empty. For example, the XOR total of the array [2,5, 阅读全文
摘要：
There are n projects numbered from 0 to n - 1. You are given an integer array milestones where each milestones[i] denotes the number of milestones the 阅读全文
摘要：
You are given an array happiness of length n, and a positive integer k. There are n children standing in a queue, where the ith child has happiness va 阅读全文
摘要：
You are given a 0-indexed integer array batteryPercentages having length n, denoting the battery percentages of n 0-indexed devices. Your task is to t 阅读全文
摘要：
Alice and Bob want to water n plants in their garden. The plants are arranged in a row and are labeled from 0 to n - 1 from left to right where the it 阅读全文
摘要：
You want to water n plants in your garden with a watering can. The plants are arranged in a row and are labeled from 0 to n - 1 from left to right whe 阅读全文
摘要：
You are given the head of a linked list. Remove every node which has a node with a greater value anywhere to the right side of it. Return the head of 阅读全文