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FizzBuzz/AWK: Difference between revisions
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{{collection|FizzBuzz}}
==
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This is the "traditional" approach:
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# Done.
</pre>
When the output is presented like that, it is easy to see a pattern.
==
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Using echo from the shell to generate the numbers as input
Disadvantage: this needs a shell where echo can do this.
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'</lang>
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Disadvantage: needs external command seq, i.e. this only works on unix.
(Also, hard to read)
<lang AWK>seq 100 | awk '$0=NR%15?NR%5?NR%3?$0:"Fizz":"Buzz":"FizzBuzz"'</lang>
==No divisions, using counters==
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Division is one of the more expensive operations,
All processing is done inside awk, ▼
so it is nice if we can avoid it.
▲All processing is done inside awk, using no division & no modulo. <br>
Instead, a simple counter for each of the output-variants is used:
<lang AWK># usage: awk -v n=38 -f fizzbuzzNoDiv.awk
#
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Same output as version 1.
==
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Another solution that works without division / modulo.
This is inspired by the versions "Without Modulus" of Nimrod and Python, <br>
using a precomputed/observed pattern to decide how to print each number. <br>
But here, the pattern is represented as chars in a string, instead of bits in an integer.
<lang AWK># usage: awk -v n=42 -f fizzbuzzRepeatPattern.awk
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