Description Given a singly linked list, determine if it is a palindrome. Example 1: Inp...
Description Given a singly linked list, determine if it is a palindrome. Example 1: Inp...
Description Given a string containing just the characters '(', ')', '{', '}', '[' and '...
Description Given a string that contains only digits 0-9 and a target value, return all...
Description On a 2x3 board, there are 5 tiles represented by the integers 1 through 5, ...
Description In a directed graph, we start at some node and every turn, walk along a dir...
https://leetcode.com/problems/word-abbreviation/description/Two words are only eligible...
Description In a given integer array A, we must move every element of A to either list ...
Description N couples sit in 2N seats arranged in a row and want to hold hands. We want...
Description https://leetcode.com/problems/cracking-the-safe/description/https://leetcod...
Description Given a grid where each entry is only 0 or 1, find the number of corner rec...
https://leetcode.com/problems/my-calendar-ii/description/https://leetcode.com/problems/...
https://leetcode.com/problems/my-calendar-i/description/https://leetcode.com/problems/m...
https://leetcode.com/problems/subarray-sum-equals-k/description/https://leetcode.com/pr...
https://leetcode.com/problems/single-element-in-a-sorted-array/description/https://leet...
https://leetcode.com/problems/optimal-account-balancing/description/NP Complete问题, O(n!...
Description Given an array of scores that are non-negative integers. Player 1 picks one...
Description Given a string, find the length of the longest substring T that contains at...
Description Given a 2D matrix matrix, find the sum of the elements inside the rectangle...
Description A strobogrammatic number is a number that looks the same when rotated 180 d...
Description We have a list of bus routes. Each routes[i] is a bus route that the i-th b...