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leetcode.886每日一题(二分图) - Exam
今天的每日一题给定一组 n 人(编号为 1, 2, …, n), 我们想把每个人分进任意大小的两组。每个人都可能不喜欢其他人,那么他们不应该属于同一组。 给定整数 n 和数组 dislikes ,其中 dislikes[i] = [ai, bi] ,表示不允许将编号为 ai 和 bi的人归入同一组。当可以用这种方法将所有人分进两组时,返回 true;否则返回 false。 示例1:
决策树(ID3)底层代码实现及原理 - Exam
假设有以下情形,有一天你在打英雄联盟,你打的是辅助泽拉斯,你对线的是大嘴,你发现你的qwer无论如何都打不中对面的大嘴,直到最后游戏结束,你输的一败涂地,然后你决定用编程的力量应用到游戏里面,所以你设计了一个程序 这个程序可以用来判断你对线的召唤师是否开了挂,你的程序从一下两个方面去分析对方 走位的时候有没有鬼畜摇摆(也就是外挂程序和召唤师的操作有冲突,外挂程序向往左边走位但是召唤师却想往右边走
手写KNN实现手写数据识别 - Exam
邻近算法,或者说K最邻近(KNN,K-NearestNeighbor)分类算法是数据挖掘分类技术中最简单的方法之一。所谓K最近邻,就是K个最近的邻居的意思,说的是每个样本都可以用它最接近的K个邻近值来代表。近邻算法就是将数据集合中每一个记录进行分类的方法————百度百科 数据集首先我们先来看一下数据集长什么样子KNN目录下跟为两个文件夹testDigits顾名思义是测试及,trainingDigi
leetcode.40 回溯算法,剪枝 - Exam
题目:给定一个候选人编号的集合 candidates 和一个目标数 target ,找出 candidates 中所有可以使数字和为 target 的组合。candidates 中的每个数字在每个组合中只能使用 一次 。注意:解集不能包含重复的组合。 实例112345678输入: candidates = [10,1,2,7,6,1,5], target = 8,输出:[[1,1,6],[1,2,
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