题目描述 给定一个单向链表，要求删除从结尾数第n个结点，并返回修改后的表头。 样例 给定数组单向链表 1->2->3->4->5 ，以及 n = 2 ，修改后的链表为 1->...
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leetcode 19
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246. Strobogrammatic Number
[LeetCode] Strobogrammatic Number 对称数 A strobogrammatic number is a number that looks t...
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155. Min Stack
题目：题目地址 题目描述请设计一个栈结构，支持 push、pop、top以及getMin操作，且每个操作的时间复杂度都是 O(1)O(1)。push(x) – 向栈中压入元素...
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20. Valid Parentheses
使用栈数据结构： 遇到左括号，需要压栈。 遇到右括号，判断栈顶是否和当前右括号匹配；若不匹配则返回false，否则匹配弹出栈顶。 最后判断栈是否为空；若为空则合法，否则不合法。
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283. Move Zeroes
leetcode Day 4 题目：Given an array nums, write a function to move all 0's to the end of i...
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LeetCode - 104. Maximum Depth of Binary Tree #JavaQuestion 求二叉树的最大深度 Given a binary tree, find its maximum depth.The maximum depth is the...
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正在复习C++,有理解不对的地方欢迎大家指正~
104. Maximum Depth of Binary Tree
Leetcode Day 3 题目：Given a binary tree, find its maximum depth.The maximum depth is the ...
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104. Maximum Depth of Binary Tree
Leetcode Day 3 题目：Given a binary tree, find its maximum depth.The maximum depth is the ...
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461. Hamming Distance
Leetcode Day 2 题目：The Hamming distance between two integers is the number of positions ...
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771. Jewels and Stones
题目：You're given strings J representing the types of stones that are jewels, and S repre...
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136. Single Number
Leetcode Day 1 136 Single Number 题目： Given a non-empty array of integers, every element...
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344. Reverse String
Leetcode Day 1 344 Reverse String 题目：Write a function that takes a string as input and ...
