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Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your algor... 阅读全文
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Given an arraynums, write a function to move all0's to the end of it while maintaining the relative order of the non-zero elements.For example, givenn... 阅读全文
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You are playing the followingBulls and Cowsgame with your friend: You write down a number and ask your friend to guess what the number is. Each time y... 阅读全文
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Given apatternand a stringstr, find ifstrfollows the same pattern.Herefollowmeans a full match, such that there is a bijection between a letter inpatt... 阅读全文
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Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999. 阅读全文
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今天刚刚开通了博客，以后会把每天刷的leetcode代码写在上面。加油，为了一年后的校园招聘！ 阅读全文
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Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest pa... 阅读全文