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MYSQL中插入数据时出现的问题:
问题:mysql> insert tdb_goods (goods_name,goods_cate,brand_name,goods_price,is_show,is_saleoff) VALUES('Y400N 14.0英寸笔记本','笔记本','联','3990',default,default...
分类:数据库   时间:2015-08-15 11:34:44    阅读次数:167
Java学习之类方法的外部和内部调用
外部调用 外部调用即是在一个类中调用另一个类的方法 package hello2;//首先定义一个类 public class Book { ??String name; ?String author; ?double price; ?public void getInfo(){ ??//以字符串的形式...
分类:编程语言   时间:2015-08-14 11:56:39    阅读次数:133
【LeetCode-面试算法经典-Java实现】【121-Best Time to Buy and Sell Stock(最佳买卖股票的时间)】
【121-Best Time to Buy and Sell Stock(最佳买卖股票的时间)】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题  Say you have an array for which the ith element is the price of a given stock on day i.   If you were only permitt...
分类:编程语言   时间:2015-08-14 07:37:48    阅读次数:196
模式匹配高级实战:嵌套的Case class之Scala学习笔记-21
package com.leegh.pattern_match/** * @author Guohui Li */abstract class Itemcase class Book(description: String,price: Double) extends Itemcase class ...
分类:其他好文   时间:2015-08-14 07:37:37    阅读次数:218
[LeetCode] Best Time to Buy and Sell Stock III
Best Time to Buy and Sell Stock III Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete a...
分类:其他好文   时间:2015-08-13 22:21:51    阅读次数:180
OC第三天(内存管理)
内存管理: 1.作用范围: 任何继承了NSObject的对象,堆基本数据类型无效如:int a ,float price;;等 2.原理: 每个对象内部都保存了一个与之相关的整数,称为引用计数器, 当使用alloc   new   copy创建一个对象的时候,对象的引用计数器被设置为1   每给对象发送一次retain消息,可以使引用计数器+1; 给对象发送一条rele...
分类:其他好文   时间:2015-08-13 22:13:32    阅读次数:107
Objective-C:MRC手动释放对象内存举例(引用计数器)
手机内存下的类的设计练习:设计Book类,1.三个成员变量: title(书名)author(作者)、price(价格)2.不使用@property,自己完成存取方法(set方法,get方法)3、加入必要其他的方法4、并对Book类进行测试 .h声明文件 1 // Book.h 2 // ...
分类:其他好文   时间:2015-08-13 19:55:04    阅读次数:269
[LeetCode] Best Time to Buy and Sell Stock
Best Time to Buy and Sell Stock Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy ...
分类:其他好文   时间:2015-08-13 18:07:39    阅读次数:182
[LeetCode] Best Time to Buy and Sell Stock II
Best Time to Buy and Sell Stock II Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete as m...
分类:其他好文   时间:2015-08-13 18:05:07    阅读次数:190
LeetCode 123 Best Time to Buy and Sell Stock III
Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete a...
分类:其他好文   时间:2015-08-12 21:28:06    阅读次数:125
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