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LeetCode-Data Stream as Disjoint Intervals
Given a data stream input of non-negative integers a1, a2, ..., an, ..., summarize the numbers seen so far as a list of disjoint intervals. For exampl ...
分类:其他好文   时间:2016-07-20 15:01:05    阅读次数:120
leetcode| Count Numbers with Unique Digits
Given a non-negative integer n, count all numbers with unique digits, x, where 0 ≤ x < 10n. Example:Given n = 2, return 91. (The answer should be the ...
分类:其他好文   时间:2016-07-20 11:41:05    阅读次数:126
leetcode 45 Jump Game II ---- java
Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maxim ...
分类:编程语言   时间:2016-07-19 18:30:23    阅读次数:189
【Leetcode 动态规划】 不知如何分类 就都放这里了
338. 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 representation and return them as an array...
分类:其他好文   时间:2016-07-19 10:44:44    阅读次数:165
leetcode-【hard】273. Integer to English Words
题目: 273. Integer to English Words Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - ...
分类:其他好文   时间:2016-07-16 14:24:15    阅读次数:230
LeetCode 179. Largest Number
Problem: https://leetcode.com/problems/largest-number/ Given a list of non negative integers, arrange them such that they form the largest number. For ...
分类:其他好文   时间:2016-07-16 14:11:40    阅读次数:189
NMF.非负矩阵分解.--.原理与应用
1.原理发现写关于非负矩阵的博文还是蛮多的,还是以自己的角度总结一下自己的最近看的若干东西以及对非负矩阵分解有用的一些资料链接。NMF,全称为non-negative matrix factorization,中文呢为“非负矩阵分解”。NMF的思想:V=WH(W权重矩阵、H特征矩阵、V原矩阵),通过计算从原矩阵提取权重和特征两个不同的矩阵出来。属于一个无监督学习的算法,其中限制条件就是W和H中的所有...
分类:其他好文   时间:2016-07-15 21:47:00    阅读次数:825
NMF.非负矩阵分解(Non-negative.Matrix.Factorization)实践
1. NMF-based 推荐算法在例如Netflix或MovieLens这样的推荐系统中,有用户和电影两个集合。给出每个用户对部分电影的打分,希望预测该用户对其他没看过电影的打分值,这样可以根据打分值为其做出推荐。用户和电影的关系,可以用一个矩阵来表示,每一列表示用户,每一行表示电影,每个元素的值表示用户对已经看过的电影的打分。下面来简单介绍一下基于NMF的推荐算法。在python当中有一个包叫做...
分类:其他好文   时间:2016-07-15 21:46:08    阅读次数:428
leetcode| Integer to English Words
Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1.For example, ...
分类:其他好文   时间:2016-07-14 19:08:05    阅读次数:125
leetcode| Add Digits
Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: ...
分类:其他好文   时间:2016-07-14 15:03:35    阅读次数:122
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