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); ---

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);           }    }}