this post was submitted on 14 Apr 2024
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Suddenly I feel like a fucking accomplished programmer, despite only doing some questionable stuff on Godot lately, but never messing up my loops... Not too badly anymore, anyway.
A fizzbuzz type of question I know I would mess up on the
modulo
operator. I know the logic isif the division of the current_number by 3 has a remainder of zero, write fizz
, but I always look up the operatorYeah it always feels like "negative logic" to me. If it's not this and not that then don't do the other... Does my head in. Next time I'm going to use a lookup table "x..f.bf..fb.f.." then mod15 the index. f=Fizz, b=Buzz, x=both. Nice thing about this is that it's easier to change with the requirements. Want to shift the second fizz right one? No problem "x..f.b.f.fb.f..". Good luck doing that with the standard approach. Add Gronk which collides with Fizz, Buzz or both at various times? Also no problem - just extend and modify the LUT accordingly and change the mod.
I can already hear people asking why x is at the start. Arrays are indexed from 0. FizzBuzz starts at 1. 15 mod 15 is zero. Loop N from 1-100, switch on lookup[N%15], case 'f' print Fizz, case 'g' print Gronk, case 'p' print FizzGronk and so on. The only "nice" original feature you lose is when both %3 and %5 fire at the same time and it prints FizzBuzz without any extra code.