菜鸟很菜的专栏

链接：https://leetcode.com/problems/3sum-closest/ 题目：16. 3Sum Closest  Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return th

原题链接：https://leetcode.com/problems/divide-two-integers/ 题目：29. Divide Two Integers Divide two integers without using multiplication, division and mod operator. If it is overflow, return M

原题链接：https://leetcode.com/problems/substring-with-concatenation-of-all-words/ 题目：30. Substring with Concatenation of All Words You are given a string, s, and a list of words, words, that are