# Leetcode 406. Queue Reconstruction by Height

## Description

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. Write an algorithm to reconstruct the queue.

Note:
The number of people is less than 1,100.

Example

Input:
[[7,0], [4,4], [7,1], [5,0], [6,1], [5,2]]

Output:
[[5,0], [7,0], [5,2], [6,1], [4,4], [7,1]]

## Solution

• 排序的规律是什么？
• 用什么数据结构来一个个插入数据？

class Solution {
public int[][] reconstructQueue(int[][] people) {
Arrays.sort(people, (p1, p2) -> p1[0] == p2[0] ? p1[1] - p2[1] : p2[0] - p1[0]);
}