16. 最接近的三数之和 给定一个包括 n 个整数的数组 nums 和 一个目标值 target。找出 nums 中的三个整数,使得它们的和与 target 最接近。返回这三个数的和。假定每组输入只存在唯一答案。 例如,…
分类:LeetCode
leetcode508. Most Frequent Subtree Sum
题目要求 Given the root of a tree, you are asked to find the most frequent subtree sum. The subtree sum of a node …
leetcode python 常见分类问题模板(复制粘贴就能用) 更新中...
排序 插入、希尔、冒泡、选择 def insertSort(arr): for i in range(1,len(arr)): tmp = arr[i] for j in range(i-1,-1,-1): if arr…
Leetcode PHP题解--D116 409. Longest Palindrome
D116 409. Longest Palindrome 题目链接 409. Longest Palindrome 题目分析 返回通过给定的字符串能组成的最长回文字符串长度。 思路 用array_count_values…
数字转换为十六进制数
“数字转换为十六进制数”1 给定一个整数,编写一个算法将这个数转换为十六进制数。对于负整数,我们通常使用 补码运算 方法。 注意: 十六进制中所有字母(a-f)都必须是小写。 十六进制字符串中不能包含多余的前导零。如果要…
两个二进制数字求和
分析 给定两个二进制字符串,返回他们的和(用二进制表示)。 第一反应是先把二进制字符串转化为十进制,然后计算他们的和,再把他们的和转为二进制。 //二进制转十进制 int BinaryToDecimal(string s…
133. Clone Graph
欢迎fork and star:Nowcoder-Repository-github 133. Clone Graph 题目 Clone an undirected graph. Each node in the gra…
[LeetCode] Best Time to Buy and Sell Stock II 买股票的最佳时间之二
Say you have an array for which the ith element is the price of a given stock on day i. …
[LeetCode] Surrounded Regions 包围区域,Number of Islands 岛屿的数量,验证LeetCode Surrounded Regions 包围区域的DFS方法
Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by…
[LeetCode] Move Zeroes 移动零
Given an array nums, write a function to move all 0‘s to the end of it while maintainin…
[LeetCode] Can Place Flowers 可以放置花
Suppose you have a long flowerbed in which some of the plots are planted and some are not. However, flo…
299. Bulls and Cows
You are playing the following Bulls and Cows game with your friend: You write down a number and ask your frien…