rt,直接猜1
First Digit
Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge
Benford's Law, also called the First-Digit Law, refers to the frequency distribution of digits i...
                            
                            
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其他好文   时间:
2014-06-20 13:04:39   
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277
                             
                         
                    
                        
                            
                            
                                title:
Largest palindrome product
Problem 4
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91
 99.
Find the l...
                            
                            
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其他好文   时间:
2014-06-07 01:24:27   
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398
                             
                         
                    
                        
                            
                            
                                Given a digit string, return all possible 
letter combinations that the number could represent.A mapping of digit to 
letters (just like on the telephon...
                            
                            
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其他好文   时间:
2014-06-06 17:50:38   
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284
                             
                         
                    
                        
                            
                            
                                【题目】
Given a non-negative number represented as an array of digits, plus one to the number.
The digits are stored such that the most significant digit is at the head of the list.
【题意】
给定一个非负整数,这个表示为一个数字数组。计算这个整数加1后的值。
【思路】
       
从低位到高位依次相加,注意处理进...
                            
                            
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其他好文   时间:
2014-06-05 01:24:44   
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250
                             
                         
                    
                        
                            
                            
                                POJ 1150 The Last Non-zero Digit 数论+容斥
题目地址: 
POJ 1150
题意: 
求排列P(n, m)后面第一个非0的数。
分析:
为了熟悉题目中的理论,我先做了俩初级的题目: 
POJ 1401,题解见:POJ
 1401 && ZOJ 2202 Factorial 阶乘N!的末尾零的个数 
NYOJ 954,题解见:NYO...
                            
                            
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其他好文   时间:
2014-06-04 22:49:42   
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322
                             
                         
                    
                        
                            
                            
                                Given a non-negative number represented as an 
array of digits, plus one to the number.The digits are stored such that the most 
significant digit is at...
                            
                            
                                分类:
其他好文   时间:
2014-06-04 19:19:52   
                                阅读次数:
185
                             
                         
                    
                        
                            
                            
                                今天看了鸟哥的linux私房菜,关于正则表达式:简单做笔记如下:
[:upper:] 大写字母 A-Z
[:lower:] 小写字母 a-z
[:digit:]  数字 0-9
[:alpha:] 字母   A-Z a-z
[:alnum:] 字母和数字 A-Z a-z 0-9
首先介绍几个字符:
^ 表示行首  (^在方括号[ ]内表示不包含,在[ ]外表示行首!!!)...
                            
                            
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其他好文   时间:
2014-06-02 22:29:06   
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238
                             
                         
                    
                        
                            
                            
                                title:
Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.
37107287533902102798797998220837590246510135740250
4637693767749000971264812489697007805041701826053...
                            
                            
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其他好文   时间:
2014-06-01 08:53:33   
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276
                             
                         
                    
                        
                            
                            
                                Specialized Four-Digit NumbersTime Limit: 
1000MSMemory Limit: 65536KTotal Submissions: 7238Accepted: 5285DescriptionFind 
and list all four-digit numbe...
                            
                            
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其他好文   时间:
2014-05-26 19:18:49   
                                阅读次数:
250
                             
                         
                    
                        
                            
                            
                                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 numbers
 
and return i...
                            
                            
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其他好文   时间:
2014-05-25 21:36:52   
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268