finish the code: Integer userNum is read from input. For each number from $0$ to userNum both inclusive, output the number's value of question mark characters $(\text{'}?\text{'})$ followed by the number on a new line.

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Ex: If the input is $4,$ then the output is:

$0$

$?1$

$??2$

$???3$

$????4$ import java.util.Scanner;

public class LoopPatterns $\{$

public static void main $($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

int userNum;

int i;

int j;

userNum $=$ scnr$.$nextInt$()$;

$/*$ Your code goes here $*/$

$\}$

$\}$