67. Plus One

Given a number represented as an array of digits, plus one to the number.

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return Arrays.copyOfRange(rst, 1, n+1);
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public class Solution {
    public int[] plusOne(int[] digits) {
       
      
       int n = digits.length;
       int[] rst = new int[n+1];
       int carry = 1;
       
       for(int i=n-1; i>=0; i--){
           rst[i+1] = (carry + digits[i]) % 10;
           carry = (carry + digits[i]) / 10;
       }
       
       if(carry == 1){
           rst[0] = 1;
           return rst;
       }else{
           return Arrays.copyOfRange(rst, 1, n+1);
    
       }

    }
}