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 as2-...
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其他好文 时间：
2014-11-21 18:16:43
阅读次数：
271
Given an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two nu...
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其他好文 时间：
2014-11-21 15:57:41
阅读次数：
227
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...
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其他好文 时间：
2014-11-21 06:55:40
阅读次数：
187
ProblemPrint all valid phone numbers of length n subject to following constraints:If a number contains a 4, it should start with 4No two consecutive d...
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其他好文 时间：
2014-11-21 06:54:39
阅读次数：
149
Given an integern, generate a square matrix filled with elements from 1 ton2in spiral order.For example,Givenn=3,You should return the following matri...
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其他好文 时间：
2014-11-20 23:21:17
阅读次数：
256
Single Number IIGiven an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a lin...
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其他好文 时间：
2014-11-20 18:29:54
阅读次数：
271
Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice?
For example,
Given sorted array A = [1,1,1,2,2,3],
Your function should return length = 5, and A is now [1,1,2,...
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其他好文 时间：
2014-11-20 17:07:45
阅读次数：
194
题目：Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complex...
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其他好文 时间：
2014-11-20 14:59:10
阅读次数：
169
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:getandset.get(key)- Get the valu...
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系统相关 时间：
2014-11-20 13:39:25
阅读次数：
289
问题描述：
Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice?
For example,
Given sorted array A = [1,1,1,2,2,3],
Your function should return length = 5, and A is now
[...
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其他好文 时间：
2014-11-19 22:19:08
阅读次数：
138
