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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.For "(()", the lon... 阅读全文
posted @ 2014-11-21 12:27
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Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).You are given a target valu... 阅读全文
posted @ 2014-11-21 11:27
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Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, given n = 3, a solution set is:"((... 阅读全文
posted @ 2014-11-21 05:41
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Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->3->4, you should return the list as 2->1->4->3.Your al... 阅读全文
posted @ 2014-11-21 05:23
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Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the ord... 阅读全文
posted @ 2014-11-21 05:06
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Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.Each numb... 阅读全文
posted @ 2014-11-21 04:40
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Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.The same repeate... 阅读全文
posted @ 2014-11-21 04:04
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Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-neg 阅读全文
posted @ 2014-11-21 03:22
LiBlog
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Given a collection of numbers, return all possible permutations. For example,[1,2,3] have the following permutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1... 阅读全文
posted @ 2014-11-21 00:53
LiBlog
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