题目如下: Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the person and k is the number of people in front of this person who have a height greater than or equ…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/queue-reconstruction-by-height/#/description 题目描述 Suppose you have a random list of people standing in a queue. Each person is described b…

用python实现多级排序,可以像C语言那样写个my_cmp,然后在sort的时候赋给参数cmp即可 但实际上,python处理cmp 是很慢的,因为每次比较都会调用my_cmp:而使用key和reverse就快得多,因为只需要在排序开始时处理一次即可,因此在排序的时候能不用cmp就尽量不用 另外可以用operator函数中的itemgetter,和attrgetter实现基于key的(多级)排序: from operator import itemgetter, attrgetter sort…

lc 406 Queue Reconstruction by Height 406 Queue Reconstruction by Height Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers(h, k), where h is the height of the person and k is the number of pe…

406. 根据身高重建队列 406. Queue Reconstruction by Height 题目描述 假设有打乱顺序的一群人站成一个队列.每个人由一个整数对 (h, k) 表示,其中 h 是这个人的身高,k 是排在这个人前面且身高大于或等于 h 的人数.编写一个算法来重建这个队列. 注意: 总人数少于1100人. 每日一算法2019/6/18Day 46LeetCode406. Queue Reconstruction by Height 示例: 输入: [[7,0], [4,4], […

Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the person and k is the number of people in front of this person who have a height greater than or equal to …

Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the person and k is the number of people in front of this person who have a height greater than or equal to …

Level:   Medium 题目描述: Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the person and k is the number of people in front of this person who have a height gre…

Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers(h, k), where h is the height of the person and k is the number of people in front of this person who have a height greater than or equal to h…

一开始backtrack,设计了很多剪枝情况,还是TLE了 ..后来用PQ做的. 其实上面DFS做到一半的时候意识到应该用PQ做,但是不确定会不会TLE,就继续了,然后果然TLE了.. PQ的做法和剪枝的判断标准是一样的,只不过PQ不是遍历,比兼职纯遍历要快. 想象一下排座位,h是身高,k是某个小朋友最多允许几个人挡住他(貌似不是很恰当). 对于单个小朋友来说,只有比他高才会挡住他,所以我们先按h的标准排最高的一批小朋友,这样一来后面批次的小朋友不会影响自己,因为后来比自己矮的不可能挡住自己.…