Write the integers of an array vertically

[da7473]

I know this is probably very simple but I really can't seem to understand how to write the integers vertically. For instance, there is an array that has 4 integers which are 9, 21, 63, and 501, the outcome would be the following

     9  2  5  6
        1  0  3
           1

This is a small step of my program and probably the easiest but I can't understand how to do it :( Can someone please help me or guide me so I can finish my program

[Rabbit]

The basic algorithm would look like this:

1) Find longest element in the array.
2) Loop from 1 to length of longest element.
3) Nest a loop to loop through each element of the array.
4) Append the digit at position in that element of the array if it exists, otherwise append a space.
5) End the inner loop
6) Append a new line.
7) End outer loop.
8) Output results.