How to print a rectangle pattern using numbers in python

Question

I am having trouble solving the following question:

Write a program that draws “modular rectangles” like the ones below. The user specifies the width and height of the rectangle, and the entries start at 0 and increase typewriter fashion from left to right and top to bottom, but are all done mod 10. Example: Below are examples of a 3 x 5 rectangular:

Exmaple Image

The following code is what I have tried to solve the problem: I know it's bad but I still don't know how to print the 5 till 9 numbers on top of each other.

width = int(input("Enter the width of the rectangle:"))
height = int(input("Enter the height of the rectangle:"))

for x in range(0, width, 1):
    for y in range(0, height, 1):
        print(y, end = ' ')
    print()

Thank you all in advance.

Nick · Accepted Answer · 2022-09-27 13:19:48Z

1

You're on the right track, but you have a few issues. Firstly you need to iterate y before x, since you process the columns for each row, not rows for each column. Secondly, you need to compute how many values you have output, which you can do with (y*width+x). To output a single digit, take that value modulo 10. Finally range(0, width, 1) is just the same as range(width). Putting it all together:

width = 5
height = 3
for y in range(height):
    for x in range(width):
        print((y*width+x)%10, end=' ')
    print()

Output:

0 1 2 3 4
5 6 7 8 9
0 1 2 3 4

answered Sep 27, 2022 at 13:19

Nick

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1 Comment

Weiyii Jin Over a year ago

I see what I am doing wrong now, thank you very much for pointing it out! also thanks you for solving the question I am struggling with. I will learn from my mistakes

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