leetcode1822. Sign of the Product of an Array

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: 1Explanation: The product of all values in the array is 144, and signFunc(144) = 1

Example 2:

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

Example 3:

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

这次的代码相当短了。也没啥说的。

Runtime: 0 ms, faster than 100.00% of Java online submissions for Sign of the Product of an Array.

Memory Usage: 41.7 MB, less than 31.62% of Java online submissions for Sign of the Product of an Array.