Description
For some fixed N, an array A is beautiful if it is a permutation of the integers 1, 2, …, N, such that:
For every i < j, there is no k with i < k < j such that A[k] * 2 = A[i] + A[j].
Given N, return any beautiful array A. (It is guaranteed that one exists.)
对于某些固定的 N,如果数组 A 是整数 1, 2, …, N 组成的排列,使得:
对于每个 i < j,都不存在 k 满足 i < k < j 使得 A[k] * 2 = A[i] + A[j]。
那么数组 A 是漂亮数组。
给定 N,返回任意漂亮数组 A(保证存在一个)。
题目链接:https://leetcode.com/problems/beautiful-array/
Difficulty: medium
Example 1:
Input: 4
Output: [2,1,4,3]
Example 2:
Input: 5
Output: [3,1,2,5,4]
Note:
- 1 <= N <= 1000
分析
- updating
参考代码
updating