摘要： Given an input string (s) and a pattern (p), implement regular expression matching with support for '.' and '*'where: '.' Matches any single character 阅读全文

摘要： Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Follow up: Could you solve it wit 阅读全文

摘要： Implement atoi which converts a string to an integer. The function first discards as many whitespace characters as necessary until the first non-white 阅读全文

摘要： Given a 32-bit signed integer, reverse digits of an integer. Note:Assume we are dealing with an environment that could only store integers within the 阅读全文

摘要： 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 阅读全文

摘要： 一、如果按字节处理，可以用struct https://docs.python.org/2/library/struct.html By default, C types are represented in the machine’s native format and byte order, a 阅读全文

摘要： Given a string s, return the longest palindromic substring in s. Input: s = "babad"Output: "bab"Note: "aba" is also a valid answer. 方法一： 暴力法，双层循环，验证所以 阅读全文

摘要： Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays. The overall run time complexity shou 阅读全文

摘要： Given a string s, find the length of the longest substring without repeating characters. Input: s = "abcabcbb"Output: 3Explanation: The answer is "abc 阅读全文

摘要： 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 conta 阅读全文