Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located within the ...
分类：
其他好文 时间：
2018-12-21 21:23:48
阅读次数：
292
Permutation p is an ordered set of integers p1, p2, ..., pn, consisting of n distinct positive integers, each of them doesn't exceed n. We'll denote t ...
分类：
其他好文 时间：
2018-12-20 18:46:23
阅读次数：
178
Start from integer 1, remove any integer that contains 9 such as 9, 19, 29... So now, you will have a new integer sequence: 1, 2, 3, 4, 5, 6, 7, 8, 10 ...
分类：
其他好文 时间：
2018-12-19 22:36:52
阅读次数：
192
Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege ...
分类：
移动开发 时间：
2018-12-19 13:04:27
阅读次数：
165
A rectangle is represented as a list [x1, y1, x2, y2], where (x1, y1) are the coordinates of its bottom-left corner, and (x2, y2) are the coordinates ...
分类：
编程语言 时间：
2018-12-15 12:01:04
阅读次数：
221
下图即为django的contenttype表 models.py 如何查询: 如何创建： ...
分类：
其他好文 时间：
2018-12-12 00:39:57
阅读次数：
238
l ROC曲线 预测 1 0 合计 实际 1 True Positive（TP） False Negative（FN） Actual Positive(TP+FN) 0 False Positive（FP) True Negative(TN) Actual Negative(FP+TN) 合计 Pr ...
分类：
其他好文 时间：
2018-12-10 14:10:05
阅读次数：
178
题目如下： Given two integers n and k, you need to construct a list which contains ndifferent positive integers ranging from 1 to n and obeys the following ...
分类：
其他好文 时间：
2018-12-09 11:57:30
阅读次数：
210
Consider a positive integer N written in standard notation with k+1 digits a?i?? as a?k???a?1??a?0?? with 0≤a?i??<10 for all i and a?k??>0. Then N is ...
分类：
其他好文 时间：
2018-12-08 20:24:07
阅读次数：
125
Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), …, (an, bn) which makes sum of mi ...
分类：
其他好文 时间：
2018-12-05 22:56:03
阅读次数：
184
