🔒 Reversing a number | Python | Page 1

velvet hazel Apr 2, 2025, 9:13 AM

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example : 2000 sens = 20 ringgit
Example : 200 sens = 2 ringgit

lost ivyBOT Apr 2, 2025, 9:13 AM

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velvet hazel example : 2000 sens = 20 ringgit Example : 200 sens = 2 ringgit

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@velvet hazel

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velvet hazel Apr 2, 2025, 9:15 AM

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Don't mind the title is the wrong one

tacit meteor Apr 2, 2025, 9:17 AM

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!title Reversing a number

lost ivyBOT Apr 2, 2025, 9:17 AM

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Reversing a number

safe fox Apr 2, 2025, 9:17 AM

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Have you encountered the floor division and modulo operators // and %?

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Alternatively, the divmod function?

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@velvet hazel

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A while loop may also be applicable here.

velvet hazel Apr 2, 2025, 9:27 AM

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Yeah

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// this is modulus

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I forgot this symbol %

tacit meteor Apr 2, 2025, 9:29 AM

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% is modulus

safe fox Apr 2, 2025, 9:32 AM

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Some interesting behaviour jumps out when you use a particular value as the righthand operand.

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!e py print(123 // 10) print(123 % 10)

lost ivyBOT Apr 2, 2025, 9:33 AM

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safe fox !e ```py print(123 // 10) print(123 % 10)```

:white_check_mark: Your 3.12 eval job has completed with return code 0.

001 | 12
002 | 3

safe fox Apr 2, 2025, 9:37 AM

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!e py print(format(0xabc // 16, 'x')) print(format(0xabc % 16, 'x'))

lost ivyBOT Apr 2, 2025, 9:37 AM

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safe fox !e ```py print(format(0xabc // 16, 'x')) print(format(0xabc % 16, 'x'))```

:white_check_mark: Your 3.12 eval job has completed with return code 0.

001 | ab
002 | c

safe fox Apr 2, 2025, 9:37 AM

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In hex.

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As with regular numbers, they're in base ten.

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So 10 as the righthand.

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With hex values, that's base 16, so 16 as the righthand.

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!e print(0xabc)

lost ivyBOT Apr 2, 2025, 9:39 AM

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safe fox !e print(0xabc)

:white_check_mark: Your 3.12 eval job has completed with return code 0.

safe fox Apr 2, 2025, 9:40 AM

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For binary, 2. Octal, 8.

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You don't need to know about this specifically, just that you're working with the base on the right.

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Hence 10, because that's what we represent numbers as.

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Typically.

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123 divides by 10 fully 12 times, with 3 left over. 12, 3.

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Floor division, modulo.

velvet hazel Apr 2, 2025, 9:48 AM

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So basically modulous is numbers with remainders?

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And % is without remainders

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So how do I do it

gilded halo Apr 2, 2025, 9:50 AM

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velvet hazel And % is without remainders

% is modulous

velvet hazel Apr 2, 2025, 9:51 AM

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// what is this called then

gilded halo Apr 2, 2025, 9:51 AM

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velvet hazel // what is this called then

floor division

velvet hazel Apr 2, 2025, 9:51 AM

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which one is with the remainders

gilded halo Apr 2, 2025, 9:51 AM

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velvet hazel which one is with the remainders

modulous

safe fox Apr 2, 2025, 9:55 AM

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The other way to do this is as a string, but they've asked you to do it mathematically.

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!e py print('123'[::-1])

lost ivyBOT Apr 2, 2025, 9:55 AM

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safe fox !e ```py print('123'[::-1])```

:white_check_mark: Your 3.12 eval job has completed with return code 0.

lost ivyBOT Apr 2, 2025, 10:55 AM

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#🔒 Reversing a number