在黑暗中寻找光明

Problem:Given a string, find the length of the longest substring without repeating characters.Examples:Given “abcabcbb”, the answer is “abc”, which the length is 3.Given “bbbbb”, the answer is...

Problem: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 N...

Problem: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)).Example 1:nu...

这个算法，答案请看 经典算法（一）之回文接下来，我将里面的答案解释一下。Problem：Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000.Example:Input: "babad"Output: "ba...

Problem: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...

Problem：You are given two non-empty linked lists representing two non-negative integers. The digitsare stored in reverse order and each of their nodes contain a single digit. Add the twonumbers ...