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1020 Tree Traversals (25分)
题干 Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ...
分类:其他好文   时间:2020-07-29 21:34:20    阅读次数:77
[LeetCode 1526] Minimum Number of Increments on Subarrays to Form a Target Array
Given an array of positive integers target and an array initial of same size with all zeros. Return the minimum number of operations to form a target  ...
分类:其他好文   时间:2020-07-27 15:38:31    阅读次数:66
[CF从零单排#13]122A - Lucky Division
题目来源: http://codeforces.com/problemset/problem/122/A Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal ...
分类:其他好文   时间:2020-07-27 13:40:27    阅读次数:64
【JavaScript】标准内置变量 Infinity
以下内容为学习记录,可以参考 MDN 原文。 环境 node v12.18.1 npm 6.14.5 vscode 1.46 Microsoft Edge 83 概念 全局属性 Infinity 是一个数值,表示无穷大。 Infinity 的初始值是 Number.POSITIVE_INFINITY ...
分类:编程语言   时间:2020-07-27 09:22:57    阅读次数:81
AUC ROC曲线
https://www.bilibili.com/video/BV1wz4y197LU?from=search&seid=17139874139360178585 讲的很好 1、TPR FPR AUC: ROC围成的面积 ROC曲线: TPR FPR为横纵坐标的曲线包围的曲线 TPR(Y) & F ...
分类:其他好文   时间:2020-07-24 21:37:33    阅读次数:82
Codeforces #657 Problem B
##题目 Pasha loves to send strictly positive integers to his friends. Pasha cares about security, therefore when he wants to send an integer n, he encry ...
分类:其他好文   时间:2020-07-19 23:37:51    阅读次数:80
Codeforces Round #656 (Div. 3) A. Three Pairwise Maximums(思维/构造)
You are given three positive (i.e. strictly greater than zero) integers xx , yy and zz . Your task is to find positive integers aa , bb and cc such th ...
分类:其他好文   时间:2020-07-18 19:56:20    阅读次数:82
C. Given Length and Sum of Digits... (贪心)
https://codeforces.com/problemset/problem/489/C C. Given Length and Sum of Digits... You have a positive integer m and a non-negative integer s. Your ...
分类:其他好文   时间:2020-07-17 22:18:10    阅读次数:71
【刷题-LeetCode】209. Minimum Size Subarray Sum
Minimum Size Subarray Sum Given an array of n positive integers and a positive integer s, find the minimal length of a contiguous subarray of which th ...
分类:其他好文   时间:2020-07-16 18:17:25    阅读次数:57
Anchor-Free目标检测算法
按时间排序的anchor free论文 为什么要anchor free? 1、anchor的数量 大小 和宽高比这些超参要调2、dense anchor boxes create a huge imbalance between positive and negative anchor boxes ...
分类:编程语言   时间:2020-07-13 09:16:27    阅读次数:104
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