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I am converting four digits using the modulus operator. what I want to do is to convert them back to their original values.
num_one = (digit_one + 7) % 10;
num_two = (digit_two + 7) % 10;
num_three = (digit_three + 7) % 10;
num_four = (digit_four + 7) % 10;
Someone with a math background will tell you that there's an infinite number of answers. I could be wrong, but just see… https://www.wolframalpha.com/input/?i=solve+for+d+where+n+%3D+%28d+%2B+7%29+mod+10
pbivens67 said:
should I post in the math section?
No, you should not post this at all. ; )
17 % 10 = 7
27 % 10 = 7
37 % 10 = 7
…
With infinite inputs giving the same result, it's impossible to get a certain single input only from the result.
Either your book fools you or you hide something important from us.
Why are some recent trolling questions also asked on stackoverflow?
