sf_jiang的博客

题目描述：Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1.Note: The length of the given binary array will not exceed 50,000.思路，参考官网，将数组中的 0 全都转化为 -1，...

一：TWO SUM，Given an array of integers, return indices of the two numbers such that they add up to a specific target.You may assume that each input would have exactly one solution, and you may not u...

A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog can jump on a stone, but it must not jump into the water.Given a list of s...

Given an input string (s) and a pattern (p), implement regular expression matching with support for '.' and '*'.'.' Matches any single character.'*' Matches zero or more of the preceding element....

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return i...

Given a string, find the length of the longest substring without repeating characters.Example 1:Input: "abcabcbb"Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2:...

Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000.Example 1:Input: "babad"Output: "bab"Note: "aba" is also a valid answer.Exa...

The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility)P A H NA P L S I I...

函数是软件产品的细胞。如何写好一个命名规范，功能清晰，鲁棒性强的函数，是一个合格程序员的基本素养。条例1： 一定要对非法输入做错误处理。 写函数最忌讳的就是不对非法输入做错误处理。调用malloc等可能出错的函数不判断返回值。这样的函数放到一个庞大复杂的系统中将是灾难。不是宕机就是出core或者各种错误的结果。曾经看过一篇文章，说是cpu感触的1纳秒，就相当于人...