bigevil的专栏

Longest Substring Without Repeating Characters Total Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters

Median of Two Sorted Arrays There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).这是

leetcode算法题第一题Two Sum，题目如下Two Sum Total Accepted: 86454 Total Submissions: 490141 My Submissions Question Solution Given an array of integers, find two numbers such that they add up to a specific tar

Longest Palindromic SubstringGiven a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substrin

Add Two Numbers Total Accepted: 58281 Total Submissions: 266931 My Submissions Question Solution You are given two linked lists representing two non-negative numbers. The digits are stored in reverse

ZigZag ConversionThe 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

Reverse IntegerReverse digits of an integer.Example1: x = 123, return 321 Example2: x = -123, return -321这题比较容易，就是把给的一个数，反顺序输出而已。直接对10取余数，把每一位数字读出来，再生成一个新的数就可以了，边界有一个溢出的问题，在这里，我选择的方法是定义一个long类型的变量，该变量

String to Integer (atoi)Implement atoi to convert a string to an integer.Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are th

Palindrome Number Some hints:Could negative integers be palindromes? (ie, -1)If you are thinking of converting the integer to string, note the restriction of using extra space.You could also try revers