There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any s ...
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其他好文 时间:
2018-03-16 20:46:06
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195
子类初始化顺序 Designated, Convenience, Required required init: 希望子类中一定实现的designated init,required强制子类重写init方法,可以保证父类的convenience init可以使用 class ClassA { ... ...
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编程语言 时间:
2018-02-22 21:32:27
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191
1.官方Feature 269: Convenience Factory Methods for Collections 2.产生背景 要创建一个只读、不可改变的集合,必须构造和分配它,然后添加元素,最后包装成一个不可修改的集合。 比如: 缺点:我们一下写了五行。即:它不能表达为单个表达式。 当然, ...
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编程语言 时间:
2018-01-13 11:08:48
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129
PAT 1018. Public Bike Management There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the wo ...
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其他好文 时间:
2018-01-07 16:04:35
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158
1.Forward curve 2.Contango & Backwardation 3.Pricing u: storage cost y: convenience yield ...
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其他好文 时间:
2017-11-06 11:11:26
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题目链接:http://codeforces.com/problemset/problem/841/A One day Kefa found n baloons. For convenience, we denote color of i-th baloon as si — lowercase le ...
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其他好文 时间:
2017-08-25 15:52:23
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恢复内容开始 One day Kefa found n baloons. For convenience, we denote color of i-th baloon as si — lowercase letter of the Latin alphabet. Also Kefa has k f ...
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其他好文 时间:
2017-08-20 21:06:47
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2017-08-20 10:00:37 writer:pprp 用头文件#include <bits/stdc++.h>很方便 A. Generous Kefa codeforces 841 A 题目如下: One day Kefa found n baloons. For convenience, ...
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其他好文 时间:
2017-08-20 11:21:17
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A. Generous Kefa One day Kefa found n baloons. For convenience, we denote color of i-th baloon as si — lowercase letter of the Latin alphabet. Also Ke ...
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其他好文 时间:
2017-08-19 17:08:19
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225
今天开始学习 IO 类 和 方法 首先 了解 File 类 首先看一下 它的四个 static field The system-dependent path-separator character represented as a string for convenience. The syste ...
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其他好文 时间:
2017-06-30 00:04:56
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244