1304. Find N Unique Integers Sum up to Zero

Easy
​
Given an integer n, return any array containing n unique integers such that they add up to 0.
Example 1:
Input: n = 5
Output:
[-7,-1,1,3,4]
Explanation:
These arrays also are accepted [-5,-1,1,2,3] , [-3,-1,2,-2,4].
Example 2:
Input: n = 3
Output:
[-1,0,1]
Example 3:
Input: n = 1
Output:
[0]
Constraints:
  • 1 <= n <= 1000

解題

Runtime: 0 ms, faster than 100.00%
Memory Usage: 2.4 MB, less than 11.86%
func sumZero(n int) []int {
ans := make([]int, 0)
for i:=n/2 ; i>0 ; i-- {
ans = append(ans, -i)
}
if n%2==1 { ans = append(ans, 0) }
for i:=n/2 ; i>0 ; i-- {
ans = append(ans, i)
}
return ans
}