字母异位词分组[https://leetcode.cn/problems/group-anagrams/]

字母异位词分组[https://leetcode.cn/problems/group-anagrams/]
单词规律[https://leetcode.cn/problems/word-pattern/]
分割等和子集[https://leetcode.cn/problems/partition-equal-subset-sum/]
下一个更大元素 I[https://leetcode.cn/problems/next-greater-element-i/]
验证回文串 II[https://leetcode.cn/problems/valid-palindrome-ii/]
Pair是一个简单的数据结构,用于存储两个相关联的值(键值对)。它类似于 Map.Entry,但更简单易用 List > nums = new ArrayLis...
三数之和[https://leetcode.cn/problems/1fGaJU/]
课程表[https://leetcode.cn/problems/course-schedule/] 课程表 II[https://leetcode.cn/problems/...
爱吃香蕉的珂珂[https://leetcode.cn/problems/koko-eating-bananas/]
岛屿的周长[https://leetcode.cn/problems/island-perimeter/]
目标和[https://leetcode.cn/problems/target-sum/]
零钱兑换[https://leetcode.cn/problems/coin-change/] 零钱兑换 II[https://leetcode.cn/problems/co...
括号的最大嵌套深度[https://leetcode.cn/problems/maximum-nesting-depth-of-the-parentheses/]
猜数字大小[https://leetcode.cn/problems/guess-number-higher-or-lower/]
省份数量[https://leetcode.cn/problems/number-of-provinces/] DFS BFS
接雨水[https://leetcode.cn/problems/trapping-rain-water/]
在学校中,N个小朋友站成一队, 第i个小朋友的身高为height[i],第i个小朋友可以看到的右边的第一个比自己身高更高的小朋友j,那么j是i的好朋友(j > i)。 请重...
x 的平方根 [https://leetcode.cn/problems/sqrtx/]
有效的完全平方数[https://leetcode.cn/problems/valid-perfect-square/]