@property (nonatomic, assign) NSString *title; 什么是assign,copy,retain之间的区别? assign: 简单赋值,不更改索引计数(Reference Counting)。 copy: 建立一个索引计数为1的对象,然后释放旧对象 retai ...
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移动开发 时间:
2016-03-26 15:29:14
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171
Counting Bits Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary repres ...
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其他好文 时间:
2016-03-24 20:03:00
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246
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r
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其他好文 时间:
2016-03-23 18:27:42
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167
Neat DP problem to go. If you don't like log(), you can use lookup table.
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其他好文 时间:
2016-03-21 13:57:56
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114
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r
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编程语言 时间:
2016-03-19 23:00:17
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275
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r
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其他好文 时间:
2016-03-19 01:03:39
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337
题目:
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1’s in their binary representation and return them as an array.
Example:
For num = 5...
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其他好文 时间:
2016-03-18 21:56:44
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208
1058 - Parallelogram Counting PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB There are n distinct points in the plane, giv
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其他好文 时间:
2016-03-09 20:46:08
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167
arc就是自动引用计算。英文名Automatic Reference Counting。在一开始的IOS开发中,内存管理是需要手动的,对某个资源的引用,引用后就对其计算+1,当不再使用就-1,当计算为0,就没有对象引用此资源,就可以释放了。后来呢,大家觉得这样不行,该搞个什么东西自动来做这些事情,当
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其他好文 时间:
2016-03-06 01:10:34
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237
从所有一位数包含的1开始向上递推所有k位数包含的1,递推式: ak = ak-1 * 10 + pow(10,k-1); AC代码: #include <vector> #include <cstdio> using namespace std; int main(){ int n; vector<
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其他好文 时间:
2016-03-03 21:23:27
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158