标签：function size value color bsp turn returns tor nts
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
Constraints:
1 <= nums.length <= 1000-100 <= nums[i] <= 100class Solution { public: int arraySign(vector<int>& nums) { int cnt_neg=0; for(int i=0;i<nums.size();i++){ if(nums[i]==0) return 0; if(nums[i]<0) cnt_neg++; } if(cnt_neg%2==0) return 1; else return -1; } };
更好的写法
class Solution { public: int arraySign(vector<int>& nums) { int sign=1; for(int n:nums){ if(n==0) return 0; if(n<0) sign=-sign; } return sign; } };
1822. Sign of the Product of an Array
标签：function size value color bsp turn returns tor nts
原文地址：https://www.cnblogs.com/Makerr/p/14727705.html
