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Lisa_Kramarenko
 3 years ago
Exercise OPT.2 – Secret Messages (Homework 1)
I don't really get the step 3. Why should the values remain in range (0,5)? Or rather why do we have to do the modulus? Somehow I don't see how do I do it after I managed to replace all the letters with "x"'s. Thanks!
Lisa_Kramarenko
 3 years ago
Exercise OPT.2 – Secret Messages (Homework 1) I don't really get the step 3. Why should the values remain in range (0,5)? Or rather why do we have to do the modulus? Somehow I don't see how do I do it after I managed to replace all the letters with "x"'s. Thanks!

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Screech
 3 years ago
Best ResponseYou've already chosen the best response.1I think I expressed a similar question when our class hit this exercise. You can review the thread of the discussion here http://openstudy.com/study#/updates/508f05b9e4b043900ad89834 Hope that the discussion which ensued clarifies the exercise for you

aznation
 3 years ago
Best ResponseYou've already chosen the best response.0I agree with Screech's thread. That step is just poorly worded and can be basically ignored. Just focus on creating a function that will take a user's string input and return an ascii shifted message back. That is the purpose of the exercise. Good luck.

aznation
 3 years ago
Best ResponseYou've already chosen the best response.0Looked closer at Opt.2 Secret Messages exercise: first I simply shifted the ascii value over by the designated amount ('A' = 65, shift 4 over would be '69'). This works fine for all characters except the last 9 of the set (8897) and (120129). These outer cases are where they expect us to modify our ascii character using the modulus operator to keep the secret letter value within the range AZ or az respectively. Handle each range using for loops and the 'ord' and 'chr' functions from the examples.
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