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Re: How many colors does a rainbow have?

by rabbits77 (Hermit)
on Jan 25, 2009 at 02:05 UTC ( #738742=note: print w/ replies, xml ) Need Help??

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  1. or download this
    $ echo roygbiv | tr -d "\n" | wc -m
  2. or download this
    $ echo roygbiv | perl -e '$a=<STDIN>;chomp $a;printf "There are %d col
+ors in the rainbow.\n",length $a'

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