hengliwuyou的专栏

题目： 给你一个由 n 个整数组成的数组nums ，和一个目标值 target 。请你找出并返回满足下述全部条件且不重复的四元组[nums[a], nums[b], nums[c], nums[d]]（若两个四元组元素一一对应，则认为两个四元组重复）： 0 <= a, b, c, d< n a、b、c 和 d 互不相同 nums[a] + nums[b] + nums[c] + nums[d] == target 你可以按 任意顺序 返回答案 。 示例 1： 输入：nums = ...

1.题目 编写一个函数来查找字符串数组中的最长公共前缀。 如果不存在公共前缀，返回空字符串""。 示例 1： 输入：strs = ["flower","flow","flight"] 输出："fl" 示例 2： 输入：strs = ["dog","racecar","car"] 输出："" 2.代码 public String longestCommonPrefix(String[] strs) { //一个字符串，则直接返回 if(strs.leng.

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the

Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a letter in pattern and a non-empty word in str. Exampl

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For example, given nums = [0, 1, 0, 3, 12], after calling you

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the