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Re: --- adding a column of integers

by Anonymous Monk
on Sep 02, 2004 at 14:34 UTC ( [id://387927]=note: print w/replies, xml ) Need Help??


in reply to adding a column of integers

awk '{s += $0} END {print s}' perl -le '$"="+"; print eval "@{[<>]}"'

Replies are listed 'Best First'.
Re^2: --- adding a column of integers
by ambrus (Abbot) on Sep 03, 2004 at 20:35 UTC
    awk '{s += $0} END {print s}'

    Also

    (echo 0;sed s,$,+, inputfile;echo p)|dc
    or even (with gnu sed)
    sed ' G s/^ *\([0-9]*\) *\n\([0-9]*\)$/0\1pm0\2nb0/;td;d; :d;s/n\(\(b\).*0\|\)[^0]*$/nb98765432109876543210a0123456789\2/; s/\(.\)\(p.*\)\(.\)\(n.*\1\).*a.*\3/\2\4\3/; s/^0*\(.*\)p\(.*m\)0*\(.*\)\(.\).\{11\}$/0\1p\4\20\3/; /m0*n.*0/!bd; s/^\(.*\)p\(.*\)m.*/\1\2/;s/^0*//; h;$!d ' inputfile
    but the point of the OP was to improve his Perl skills.

    Update 2007 dec 6: see also Re: Golf: Adding up array elements

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