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将字符串转换成数字
问题描述: Implement atoi to convert a string to an integer. 解题思路: 对于一个字符串需要注意一下几点: 1、过滤字符串开头的所有空格字符; 2、注意数字字符前面的“+”和“-”字符,从而确定数字的正负号; 3、只处理数字字符,一旦出现非数字字符,立即停止字符串处理,并返回已处理的结果; 4、返回结果时要注意数字越界的问题,不能...
分类:其他好文   时间:2014-07-31 00:03:45    阅读次数:314
HDU2138 随机素数测试 Miller-Rabin算法
题目描述 Give you a lot of positive integers, just to find out how many prime numbers there are.. In each case, there is an integer N representing the num...
分类:其他好文   时间:2014-07-30 23:35:35    阅读次数:300
BNUOJ 1575 Supermarket
SupermarketTime Limit: 2000msMemory Limit: 65536KBThis problem will be judged onPKU. Original ID:145664-bit integer IO format:%lld Java class name:Mai...
分类:其他好文   时间:2014-07-30 23:19:55    阅读次数:318
Android:EditText限制文字输入
Android的编辑框控件EditText在平常编程时会经常用到,有时候会对编辑框增加某些限制,如限制只能输入数字,最大输入的文字个数,不能输入 一些非法字符等,这些需求有些可以使用android控件属性直接写在布局xml文件里,比如android:numeric="integer"(只允 许输入....
分类:移动开发   时间:2014-07-30 20:26:54    阅读次数:259
UVa 1339 Ancient Cipher
Ancient Cipher Ancient Roman empire had a strong government system with various departments, including a secret service department. Important documents were sent between provinces and the capit...
分类:其他好文   时间:2014-07-30 17:35:14    阅读次数:227
Watch The Movie
Watch The Movie Time Limit : 3000/1000ms (Java/Other)   Memory Limit : 65535/65535K (Java/Other) Total Submission(s) : 10   Accepted Submission(s) : 4 Font: Times New Roman | Verdana | Georgia Fon...
分类:其他好文   时间:2014-07-30 14:57:54    阅读次数:264
HDU-1664-Different Digits(BFS)
Problem Description Given a positive integer n, your task is to find a positive integer m, which is a multiple of n, and that m contains the least number of different digits when represented in decim...
分类:其他好文   时间:2014-07-30 14:46:03    阅读次数:230
[poj 2417]Discrete Logging 数论 BSGS
Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 3516   Accepted: 1651 Description Given a prime P, 2 31, an integer B, 2 BL == N (mod P) Input Read severa...
分类:其他好文   时间:2014-07-30 12:27:53    阅读次数:331
xtu字符串 C. Marlon's String
C. Marlon's StringTime Limit: 2000msMemory Limit: 65536KB64-bit integer IO format:%lld Java class name:MainLong long ago, there was a coder named Marl...
分类:其他好文   时间:2014-07-30 12:08:23    阅读次数:206
LeetCode : string to integer (atoi)
解法:考虑多种情况 1 #include 2 3 class Solution { 4 public: 5 int atoi(const char *str) { 6 int signal = 0; /*标记正负,还未出现判定正负的标志时,记为0*/ 7 ...
分类:其他好文   时间:2014-07-30 11:57:03    阅读次数:182
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