原文链接: https://leetcode-cn.com/problems/number-of-provinces
英文原文There are n cities. Some of them are connected, while s
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原文链接: https://leetcode-cn.com/problems/optimal-division
英文原文You are given an integer array nums. The adjacent integers
原文链接: https://leetcode-cn.com/problems/brick-wall
英文原文There is a rectangular brick wall in front of you with n rows of
原文链接: https://leetcode-cn.com/problems/next-greater-element-iii
英文原文Given a positive integer n, find the smallest inte
原文链接: https://leetcode-cn.com/problems/subarray-sum-equals-k
英文原文Given an array of integers nums and an integer k, ret
原文链接: https://leetcode-cn.com/problems/array-nesting
英文原文You are given an integer array nums of length n where nums is
原文链接: https://leetcode-cn.com/problems/permutation-in-string
英文原文Given two strings s1 and s2, return true if s2 contai
原文链接: https://leetcode-cn.com/problems/out-of-boundary-paths
英文原文There is an m x n grid with a ball. The ball is initi
原文链接: https://leetcode-cn.com/problems/shortest-unsorted-continuous-subarray
英文原文Given an integer array nums, you need
原文链接: https://leetcode-cn.com/problems/delete-operation-for-two-strings
英文原文Given two strings word1 and word2, return