java.lang.Object
g0601_0700.s0667_beautiful_arrangement_ii.Solution

public class Solution extends Object
667 - Beautiful Arrangement II\. Medium Given two integers `n` and `k`, construct a list `answer` that contains `n` different positive integers ranging from `1` to `n` and obeys the following requirement: * Suppose this list is answer = [a1, a2, a3, ... , an], then the list [|a1 - a2|, |a2 - a3|, |a3 - a4|, ... , |an-1 - an|] has exactly `k` distinct integers. Return _the list_ `answer`. If there multiple valid answers, return **any of them**. **Example 1:** **Input:** n = 3, k = 1 **Output:** [1,2,3] Explanation: The [1,2,3] has three different positive integers ranging from 1 to 3, and the [1,1] has exactly 1 distinct integer: 1 **Example 2:** **Input:** n = 3, k = 2 **Output:** [1,3,2] Explanation: The [1,3,2] has three different positive integers ranging from 1 to 3, and the [2,1] has exactly 2 distinct integers: 1 and 2. **Constraints:** * 1 <= k < n <= 104
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • constructArray

      public int[] constructArray(int n, int k)