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题目描述：Swap Nodes in PairsGiven a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list... 阅读全文
posted @ 2015-02-07 16:17
Yano_nankai
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题目要求：Merge k Sorted ListsMergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.AnalysisThe simplest solution... 阅读全文
posted @ 2015-02-07 16:13
Yano_nankai
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题目描述：Generate ParenthesesGivennpairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, givenn= 3, ... 阅读全文
posted @ 2015-02-07 16:08
Yano_nankai
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题目描述：Valid ParenthesesGiven a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must... 阅读全文
posted @ 2015-02-07 15:56
Yano_nankai
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题目描述：Remove Nth Node From End of ListGiven a linked list, remove thenthnode from the end of list and return its head.For example, Given linked list:... 阅读全文
posted @ 2015-02-07 15:50
Yano_nankai
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题目描述：4SumGiven an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives th... 阅读全文
posted @ 2015-02-07 15:43
Yano_nankai
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题目描述：Letter Combinations of a Phone NumberGiven a digit string, return all possible letter combinations that the number could represent.A mapping of d... 阅读全文
posted @ 2015-02-07 15:37
Yano_nankai
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题目描述：3Sum ClosestGiven an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the thre... 阅读全文
posted @ 2015-02-07 15:32
Yano_nankai
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题目描述：3SumGiven an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero.No... 阅读全文
posted @ 2015-02-07 15:22
Yano_nankai
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题目描述：Longest Common PrefixWrite a function to find the longest common prefix string amongst an array of strings.代码如下：class Solution {public: string... 阅读全文
posted @ 2015-02-07 15:01
Yano_nankai
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