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ACM判断所给数字能否表示所有的数字
DescriptionA magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But the problem is, the sys...
分类:其他好文   时间:2015-07-25 15:04:24    阅读次数:524
Currency System in Geraldion
题目:DescriptionA magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But the problem is, the ...
分类:其他好文   时间:2015-07-25 15:01:17    阅读次数:118
Big-endian和Little-endian
Big-endian和Little-endianflyfish 2015-7-25引用自《深入理解计算机系统》的说法 最高有效字节在最前面的方式,称为大端法(big endian) 最低有效字节在最前面的方式,称为小端法(little endian)引用自《Computer Systems A Programmer’s Perspective》的说法 where the most signif...
分类:其他好文   时间:2015-07-25 12:21:09    阅读次数:121
sql关键字之null
在数据库中使用一种特殊的值表示未知的值--NULL,我们称之为空值但并不是空的字符串,而是特殊的值。执行:select * from EMP where EMPID in(2,3,null);结果: 执行:select * from EMP where EMPID not in(2,3...
分类:数据库   时间:2015-07-25 12:06:13    阅读次数:159
PL/SQL设置快捷键
PL/SQL常用的快捷方式:sf= select * from sr=select t.*,t.rowid from t sd = select distinct * from d=delete from w= where sc=select count(1) from u= update在某一文件...
分类:数据库   时间:2015-07-25 11:55:04    阅读次数:133
leetCode 89.Gray Code (格雷码) 解题思路和方法
The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total number of bits in the code, print the sequence of ...
分类:其他好文   时间:2015-07-25 10:45:07    阅读次数:114
BFS,推荐
Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %lluDescriptionA friend of you is doing research on the Traveling Knight Problem (TKP) where...
分类:其他好文   时间:2015-07-24 22:17:15    阅读次数:116
LeetCode#36 Valid Sudoku
Problem Definition:Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where empty ce...
分类:其他好文   时间:2015-07-24 22:06:51    阅读次数:132
货币问题
Time Limit:2000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64uDescriptionA magic island Geraldion, where Gerald lives, has its own currency sys...
分类:其他好文   时间:2015-07-24 22:05:51    阅读次数:89
Codeforces Round #313 A. Currency System in Geraldion
Description A magic island Geraldion, where Gerald lives, has its own currency system. It uses banknotes of several values. But the problem is, the system is not perfect and sometimes it happens th...
分类:其他好文   时间:2015-07-24 20:52:47    阅读次数:101
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