Sum square difference
Problem 6
The sum of the squares of the first ten natural numbers is,
12 + 22 + ... + 102 = 385
The square of the sum of the first ten natural numbers is,
(1 + 2 + ....
                            
                            
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其他好文   时间:
2014-05-23 02:22:57   
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                                Reorder an array so that odd numbers come 
before even numbers.
                            
                            
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其他好文   时间:
2014-05-22 00:38:39   
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259
                             
                         
                    
                        
                            
                            
                                Print 1 to max N bits numbers.
                            
                            
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其他好文   时间:
2014-05-22 00:21:45   
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241
                             
                         
                    
                        
                            
                            
                                Given a sorted linked list, delete all nodes 
that have duplicate numbers, leaving onlydistinctnumbers from the original 
list.For example,Given1->2->3-...
                            
                            
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其他好文   时间:
2014-05-21 17:51:09   
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190
                             
                         
                    
                        
                            
                            
                                【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   
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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   
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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   
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214
                             
                         
                    
                        
                            
                            
                                1、
??
Add Two Numbers 
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two num...
                            
                            
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其他好文   时间:
2014-05-21 10:49:10   
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221
                             
                         
                    
                        
                            
                            
                                UVA 10712 - Count the Numbers
题目链接
题意:求区间[A,B]数字中,子串包含N的数字有多少个
思路:数位DP,写了个记忆化乱搞搞过了,dp[i][j][2][2][2],分别表示i位的时候,末尾为j的情况,后面3维用来处理小于的情况,已经出现过子串的情况,前导0的情况,然后注意特判一下数字0的情况,因为一开始要分解数字,而0是不能分解的。
代...
                            
                            
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其他好文   时间:
2014-05-21 09:11:44   
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264
                             
                         
                    
                        
                            
                            
                                题目:
      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 numbers such that they add up t...
                            
                            
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其他好文   时间:
2014-05-21 07:42:18   
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230