aloalgoSign of Product of Array
Easy
You are given an integer array nums.
Your task is to determine the sign of the product of all elements in the array.
Note that:
- If the product is negative, return
-1. - If the product is zero, return
0. - If the product is positive, return
1.
Return -1, 0, or 1 representing the sign of the product.
Example 1
Input
[-1, -2, -3, -4, 3, 2, 1]
Output
1
Explanation:
The product of all values in the array is 144, which is positive, so we return 1.
Example 2
Input
[1, 5, 0, 2, -3]
Output
0
Explanation:
The array contains 0, so the product is 0, and we return 0.
Example 3
Input
[-1, 1, -1, 1, -1]
Output
-1
Explanation:
The product of all values in the array is -1, which is negative, so we return -1.
Input
[-1, -2, -3, -4, 3, 2, 1]
Output
1