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Basic Calculator
Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or minus...
分类:其他好文   时间:2015-07-23 13:35:37    阅读次数:109
oracle 小技巧
--相当于建了个e临时表with e as (select * from scott.emp e where e.empno=7499)select * from e;minus 取差集 可以替换(not in | in )select id from order minus select orde...
分类:数据库   时间:2015-07-13 15:50:17    阅读次数:168
Oracle学习之集合运算
一、集合运算操作符 UNION:(并集)返回两个集合去掉重复值的所有的记录 UNION ALL:(并集)返回两个集合去掉重复值的所有的记录 INTERSECT:(交集)返回两个集合的所有记录,重复的只取一次 MINUS:(差集)返回属于第一个集合,但不属于第二个集合的所...
分类:数据库   时间:2015-07-12 17:19:54    阅读次数:135
【LeetCode 8_字符串_实现】String to Integer (atoi)
1 enum status{VALID = 0, INVALID}; 2 int g_status; 3 4 long long SubStrToInt(const char* str, bool minus) 5 { 6 long long num = 0; 7 int fl...
分类:其他好文   时间:2015-07-08 18:12:09    阅读次数:105
【Oracle学习笔记-5--】集合操作之union,intersect和minus操作
--union并操作select e.employee_id,e.last_name from hr.employees ewhere e.last_name like 'C%'unionselect e.employee_id,e.last_name from hr.employees ewher...
分类:数据库   时间:2015-07-08 10:54:56    阅读次数:220
LeetCode224 BasicCalculator java题解
题目: Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-negative integers...
分类:编程语言   时间:2015-07-03 09:20:19    阅读次数:143
IBM Minus One(water)
IBM Minus OneTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4475Accepted Submission(s): 2349Probl...
分类:其他好文   时间:2015-07-02 23:55:25    阅读次数:133
[LeetCode] Basic Calculator
Basic Calculator Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-nega...
分类:其他好文   时间:2015-06-15 16:26:59    阅读次数:151
basic calculator (stack problem)
Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or minus...
分类:其他好文   时间:2015-06-15 09:11:32    阅读次数:122
【LeetCode】Basic Calculator 解题报告
【题目】 Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-negative integer...
分类:其他好文   时间:2015-06-14 12:31:38    阅读次数:122
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