2239

2239. Find Closest Number to Zero (Easy)

Given an integer array nums of size n, return the number with the value closest to 0 in nums. If there are multiple answers, return the number with the largest value.

 

Example 1:

Input: nums = [-4,-2,1,4,8]
Output: 1
Explanation:
The distance from -4 to 0 is |-4| = 4.
The distance from -2 to 0 is |-2| = 2.
The distance from 1 to 0 is |1| = 1.
The distance from 4 to 0 is |4| = 4.
The distance from 8 to 0 is |8| = 8.
Thus, the closest number to 0 in the array is 1.

Example 2:

Input: nums = [2,-1,1]
Output: 1
Explanation: 1 and -1 are both the closest numbers to 0, so 1 being larger is returned.

 

Constraints:

• 1 <= n <= 1000
• -105 <= nums[i] <= 105

Similar Questions:

• Find K Closest Elements (Medium)

Solution 1.

// OJ: https://leetcode.com/problems/find-closest-number-to-zero/
// Author: github.com/lzl124631x
// Time: O(N)
// Space: O(1)
class Solution {
public:
    int findClosestNumber(vector<int>& A) {
        int diff = INT_MAX, ans = INT_MAX;
        for (int n : A) {
            if (abs(n) < diff || (abs(n) == diff && n > ans)) {
                diff = abs(n);
                ans = n;
            } 
        }
        return ans;
    }
};

Discuss

https://leetcode.com/problems/find-closest-number-to-zero/discuss/1953786