Given an array of non-negative integers, you 
are initially positioned at the first index of the array.Each element in the 
array represents your maximu...
                            
                            
                                分类:
其他好文   时间:
2014-05-19 08:23:07   
                                阅读次数:
223
                             
                    
                        
                            
                            
                                Given an array of non-negative integers, you 
are initially positioned at the first index of the array.Each element in the 
array represents your maximu...
                            
                            
                                分类:
其他好文   时间:
2014-05-19 08:07:26   
                                阅读次数:
288
                             
                    
                        
                            
                            
                                题目:合并两个有序单链表思路:一开始想复杂了,以为必须在原链表上修改(绕来绕去还AC了,但是思路相当绕),其实没有,按照正常地合并两个数组同样的方法也对。代码:public 
ListNode mergeTwoLists(ListNode l1, ListNode l2) { if(l1 ...
                            
                            
                                分类:
其他好文   时间:
2014-05-19 07:48:32   
                                阅读次数:
314
                             
                    
                        
                            
                            
                                Subsequence
Time Limit: 1000MS
 
Memory Limit: 65536K
Total Submissions: 8128
 
Accepted: 3141
Description
A sequence of N positive integers (10 < N < 100 000), each of t...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 15:26:37   
                                阅读次数:
284
                             
                    
                        
                            
                            
                                4Sum
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 unique quadruplets in the array which gives the sum of target....
                            
                            
                                分类:
其他好文   时间:
2014-05-18 13:49:09   
                                阅读次数:
306
                             
                    
                        
                            
                            
                                【题目】
Divide two integers without using multiplication, division and mod operator.
【题意】
         计算两个数的商,不能使用乘、除、取余操作
【思路】
        用加法,确定多少除数相加其和恰好<=被除数
        为了提高算法效率,利用贪心思想,采用滚雪球式的翻倍叠加策略,使和快速逼近被除数
        集中特殊情况需要注意:
            1. 结果是负数
         ...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 10:42:00   
                                阅读次数:
259
                             
                    
                        
                            
                            
                                【题目】
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 algorithm should use only constant space. You may not modify the values in the list, only nodes it...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 08:37:57   
                                阅读次数:
370
                             
                    
                        
                            
                            
                                Problem Description
For a decimal number x with n digits (AnAn-1An-2 ... A2A1), we define its weight as F(x) = An * 2n-1 + An-1 * 2n-2 + ... + A2 * 2 + A1 *
 1. Now you are given two numbers A and...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 06:35:50   
                                阅读次数:
300
                             
                    
                        
                            
                            
                                Given an unsorted array of integers, find the 
length of the longest consecutive elements sequence.For example,Given[100, 4, 
200, 1, 3, 2],The longest ...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 01:52:45   
                                阅读次数:
317
                             
                    
                        
                            
                            
                                Given two numbers represented as strings, 
return multiplication of the numbers as a string.Note: The numbers can be 
arbitrarily large and are non-nega...
                            
                            
                                分类:
其他好文   时间:
2014-05-18 01:25:07   
                                阅读次数:
288