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3300. Minimum Element After Replacement with Digit Sum

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Problem Statement

3300. Minimum Element After Replacement With Digit Sum

Easy


You are given an integer array nums.

You replace each element in nums with the sum of its digits.

Return the minimum element in nums after all replacements.

 

Example 1:

Input: nums = [10,12,13,14]

Output: 1

Explanation:

nums becomes [1, 3, 4, 5] after all replacements, with minimum element 1.

Example 2:

Input: nums = [1,2,3,4]

Output: 1

Explanation:

nums becomes [1, 2, 3, 4] after all replacements, with minimum element 1.

Example 3:

Input: nums = [999,19,199]

Output: 10

Explanation:

nums becomes [27, 10, 19] after all replacements, with minimum element 10.

 

Constraints:

Java

Source file
class Solution {
    public int minElement(int[] nums) {
        int minm = Integer.MAX_VALUE;
        for (int n : nums)
            minm = Math.min(minm, sumOfDigits(n));
        return minm;
    }

    int sumOfDigits(int n) {
        int sum = 0;
        while (n > 0) {
            sum += n % 10;
            n /= 10;
        }
        return sum;
    }
}