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Implement regular expression matching with support for '.' and '*'.'.' Matches any single character.'*' Matches zero or more of the pr... 阅读全文
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Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers be... 阅读全文
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Given a 32-bit signed integer, reverse digits of an integer.Example 1:Input: 123Output: 321Example 2:Input: -123Output: -321Example 3... 阅读全文
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The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern ... 阅读全文
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CoinsTime Limit: 3000MS Memory Limit: 30000KTotal Submissions: 40853 Accepted: 13835DescriptionPeople in Silverland use coins.They hav... 阅读全文
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Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000.Example:Input: "bab... 阅读全文
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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 tim... 阅读全文
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SumsetsTime Limit: 2000MS Memory Limit: 200000KTotal Submissions: 21492 Accepted: 8355DescriptionFarmer John commanded his cows to sea... 阅读全文