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Perfect Squares
Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton.For example, givenn=12, return...
分类:其他好文   时间:2015-09-10 07:16:03    阅读次数:170
iOS开发——错误总结篇&开发中常见错误和警告总结(三十四)
开发中常见错误和警告总结(三十四)1、 错误提示:iPhone/iPod Touch: application executable is missing a required architecture. At least one of the following architecture(s) m...
分类:移动开发   时间:2015-09-09 22:44:00    阅读次数:227
iOS使用代码调整约束做动画效果时出现Unable to simultaneously satisfy constraints.
出现这个问题时, 首先应该仔细看错误, 去除多余的存在冲突的约束,Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is on...
分类:移动开发   时间:2015-09-08 18:36:28    阅读次数:314
【基础】常用的机器学习&数据挖掘知识点
Basis(基础):MSE(Mean Square Error 均方误差),LMS(LeastMean Square 最小均方),LSM(Least Square Methods 最小二乘法),MLE(MaximumLikelihood Estimation最大似然估计),QP(Quadratic ...
分类:其他好文   时间:2015-09-08 15:30:02    阅读次数:249
[LeetCode]Maximum Product Subarray
Maximum Product SubarrayFind the contiguous subarray within an array (containing at least one number) which has the largest product.For example, given...
分类:其他好文   时间:2015-09-07 12:33:10    阅读次数:129
[LeetCode]Maximum Subarray
Maximum SubarrayFind the contiguous subarray within an array (containing at least one number) which has the largest sum.For example, given the array[?...
分类:其他好文   时间:2015-09-07 00:35:17    阅读次数:147
[LeetCode#146]LRU Cache
Problem:Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:getandset.get(key)- Get ...
分类:系统相关   时间:2015-09-04 09:50:26    阅读次数:297
【LeetCode】LRU Cache
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:get and set.get(key) - Get the v...
分类:系统相关   时间:2015-09-02 09:26:06    阅读次数:204
openStack 云平台使用一般杂记
1. To launch an instance,you must at least specify the flavor,image name,network,security group,keypair,and instance name;2. A flavor specifies a virt...
分类:其他好文   时间:2015-09-01 10:32:12    阅读次数:202
并查集
并查集(Union-find Sets)是一种非常精巧而实用的数据结构,它主要用于处理一些不相交集合的合并问题。一些常见的用途有求连通子图、求最小生成树的 Kruskal 算法和求最近公共祖先(Least Common Ancestors, LCA)等。 使用并查集时,首先会存在一组不相交的动态集合 $S = \left\{ {{S_1},{S_2}, \cdots ,{S_k}} \rig...
分类:其他好文   时间:2015-08-31 23:53:36    阅读次数:353
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