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HDU 5183 Negative and Positive (NP)
HDU 5183 Negative and Positive (NP) 思路:维护一下前缀和,从后往前向set里面插入前缀和,然后查找sum[i-1]+(-1)i+1*k在不在set里面。 代码(快读+set): 1466ms险过,用hash表应该快一点。 ...
分类:其他好文   时间:2017-10-02 20:56:39    阅读次数:119
leetcode: Continuous Subarray Sum
Given a list of non-negative numbers and a target integer k, write a function to check if the array has a continuous subarray of size at least 2 that ...
分类:其他好文   时间:2017-10-02 15:21:59    阅读次数:152
Candidate Sampling Sampled Softmax
【softmax分类器的加速器】 https://www.tensorflow.org/api_docs/python/tf/nn/sampled_softmax_loss This is a faster way to train a softmax classifier over a huge ...
分类:其他好文   时间:2017-09-30 11:44:18    阅读次数:360
LeetCode Target Sum
原题链接在这里:https://leetcode.com/problems/target-sum/description/ 题目: You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now ...
分类:其他好文   时间:2017-09-28 10:01:39    阅读次数:114
javascript数据类型和类型转换
一 数据类型 1)typeof 查看数据类型 1.number 数字 取值范围:正无穷 - 负无穷、NaN 正无穷:Number.POSITIVE_INFINITY 负无穷:Number.NEGATIVE_INFINITY 1 var v = NaN; 2 alert(typeof v);//num ...
分类:编程语言   时间:2017-09-27 23:55:01    阅读次数:226
258. 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: 3... ...
分类:其他好文   时间:2017-09-26 21:23:08    阅读次数:175
258. Add Digits
Given a non-negative integernum, repeatedly add all its digits until the result has only one digit. For example: Givennum = 38, the process is like:3 ...
分类:其他好文   时间:2017-09-26 20:57:35    阅读次数:177
LeetCode Count Numbers with Unique Digits
原题链接在这里:https://leetcode.com/problems/count-numbers-with-unique-digits/description/ 题目: Given a non-negative integer n, count all numbers with unique ...
分类:其他好文   时间:2017-09-26 14:49:16    阅读次数:127
[LintCode] Factorization
A non-negative numbers can be regarded as product of its factors.Write a function that takes an integer n and return all possible combinations of its ...
分类:其他好文   时间:2017-09-26 14:00:51    阅读次数:199
[leetcode] 66. Plus One 解题报告
Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any leadin ...
分类:其他好文   时间:2017-09-26 01:05:35    阅读次数:101
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