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noneOptV2.js
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43 lines (36 loc) · 960 Bytes
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/*
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).
*/
function arraySign(nums) {
for (i = 0; i < nums.length; i++){
let product = nums.reduce(function(acc,curr){
return acc * curr;
});
if (product > 0){
return 1;
}
else if(product < 0){
return -1;
}
}
return 0;
}
/*
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
*/