1822. Sign of the Product of an Array

#### QUESTION:

There is a function signFunc(x) that returns:

1 if x is positive. -1 if x is negative. 0 if x is equal to 0. You are given an integer array nums. Let product be the product of all values in the array nums.

Return signFunc(product).

Example 1:

``````Input: nums = [-1,-2,-3,-4,3,2,1]
Output: 1
Explanation: The product of all values in the array is 144, and signFunc(144) = 1
``````

Example 2:

``````Input: nums = [1,5,0,2,-3]
Output: 0
Explanation: The product of all values in the array is 0, and signFunc(0) = 0
``````

Example 3:

``````Input: nums = [-1,1,-1,1,-1]
Output: -1
Explanation: The product of all values in the array is -1, and signFunc(-1) = -1
``````

Constraints:

``````1 <= nums.length <= 1000
-100 <= nums[i] <= 100
``````

#### SOLUTION:

``````class Solution {
func arraySign(_ nums: [Int]) -> Int {
var result: Int = 1
for num in nums {
if num == 0 {
return 0
} else if num > 0 {
result *= 1
} else if num < 0 {
result *= -1
}
}
return result
}
}
``````
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