667.md

Beautiful Arrangement II

解法一

func constructArray(n int, k int) []int {
   让 := make([]int,0,n)

   i,j := 1,n
   for i <= j {
       if k %2 ==1 {
           让 = append(让,i)
           i++
       }else {
           让 = append(让,j)
           j--
       }
       if k >1 {
          k--
       }
   }
}