The 1ms java solution

  • 1

    this is my solution:

    public class Solution {
        public int addDigits(int num) {
    		if (num == 0)
    			return 0;
    		int temp = num%9;
    		if (temp == 0)
    			return 9;
    		return temp;

    it cost 2ms.Does anyone know the 1ms solution?


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