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一、问题描述 Description: Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For exampl... 阅读全文
posted @ 2015-05-20 19:20
神奕
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一、问题描述 Description: Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes... 阅读全文
posted @ 2015-05-20 18:09
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一、问题描述 Description: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid... 阅读全文
posted @ 2015-05-20 17:48
神奕
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一、问题描述 Description: Given a linked list, remove the nth node from the end of list and return its head. For example: Given linked li... 阅读全文
posted @ 2015-05-20 13:34
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一、问题描述 Description: Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all uni... 阅读全文
posted @ 2015-05-20 12:49
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一、问题描述 Description: Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit ... 阅读全文
posted @ 2015-05-20 11:25
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