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

這次的代碼相當(dāng)短了。也沒啥說的。

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.