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
}