Given an array of integers, every element appears
three times except for one. Find that single one. Note: Your algorithm should
have a linear runtime ...
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其他好文 时间：
2014-05-27 00:10:26
阅读次数：
319
Given an array of integers, every element
appears twice except for one. Find that single one. Note: Your algorithm should
have a linear runtime comple...
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其他好文 时间：
2014-05-23 07:22:48
阅读次数：
241
Given an arraySofnintegers, are there
elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which
gives the sum of zero.Note:Elemen...
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其他好文 时间：
2014-05-22 16:53:52
阅读次数：
173
Given an array of integers, every element
appearstwiceexcept for one. Find that single one.Note:Your algorithm should have
a linear runtime complexity...
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其他好文 时间：
2014-05-22 16:31:03
阅读次数：
194
【题目】
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.
The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
A partially filled sudoku which is valid.
Note:
A valid Sudoku board (par...
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其他好文 时间：
2014-05-22 09:58:54
阅读次数：
234
Two elements of a binary search tree (BST) are
swapped by mistake.Recover the tree without changing its structure.Note:A
solution using O(n) space is ...
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其他好文 时间：
2014-05-21 19:11:16
阅读次数：
266
【题目】
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 number in C may only be used once in the combination.
Note:
All numbers (including target) will be ...
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其他好文 时间：
2014-05-21 15:55:25
阅读次数：
259
【题目】
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 repeated number may be chosen from C unlimited number of times.
Note:
All numbers (including target) w...
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其他好文 时间：
2014-05-21 15:21:28
阅读次数：
292
【题目】
Given two numbers represented as strings, return multiplication of the numbers as a string.
Note: The numbers can be arbitrarily large and are non-negative.
【题意】
给定用字符串表示的整数，返回两个数的乘积结果字符串。两个数字都非负，且能任意大。
【思路】
1. 考虑其中一个数是0的情况
2. 模拟乘法运算...
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其他好文 时间：
2014-05-21 13:45:37
阅读次数：
214
Reverse a linked list from position m to n. Do it in-place and in one-pass.
For example:
Given 1->2->3->4->5->NULL, m = 2 and n =
4,
return 1->4->3->2->5->NULL.
Note:
Given m, n satisfy the fol...
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其他好文 时间：
2014-05-21 07:18:02
阅读次数：
301
