FizzBuzz/AWK: Difference between revisions
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Fixed syntax highlighting.
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{{collection|FizzBuzz}}
===regular if / else===
<!-- http://ideone.com/UrHdvd -->
This is the "traditional" approach:
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Minor tweak: printf with no newline, and linebreaks only after each "FizzBuzz",
to get a more compact output.
<
#
BEGIN {
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print "\n# Done."
}</
{{out}}
<pre>
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When the output is presented like that, it is easy to see a pattern.
===bash with echo===
<!-- http://ideone.com/0VMIuO -->
Using echo from the shell to generate the numbers as input.
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Disadvantage: this needs a shell where echo can do this.
<
BEGIN {RS=" "}
$1 % 15 == 0 {print "FizzBuzz"; next}
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$1 % 3 == 0 {printf "Fizz "; next}
{printf "%3d ",$1}
'</
===One-liner with seq===
Like version 2, using bash with seq to generate the numbers as input. <br>
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(Also, hard to read)
<
===No divisions, using counters===
<!-- http://ideone.com/uHmYUr -->
Division is one of the more expensive operations,
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All processing is done inside awk, using no division & no modulo. <br>
Instead, a simple counter for each of the output-variants is used:
<
#
# FizzBuzz using no division & no modulo-operations:
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}
print "\n# Done."
}</
Same output as version 1.
===No divisions, using pattern-string===
<!-- http://ideone.com/HJsrvl -->
Another solution that works without division / modulo.
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But here, the pattern is represented as chars in a string,
instead of bits in an integer.
<
#
function prt(x,v) {
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}
print "\n# Done."
}</
Same output as version 1.
===Custom FizzBuzz===
===Example program 1===
generated from [[General_FizzBuzz#AWK]],
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<!-- http://ideone.com/yw1oEK -->
<
#
BEGIN {print "# CustomFizzBuzz:"}
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{print " ",x; x=""}
END {print "# Done."} </
{{out}}
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7 Baxx</pre>
<
$1 % 3 == 0 {x = x "Fizz"}
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{print " ", x; x=""}
END {print "# Done."}</
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