Best One-liner

Yusuke Endoh
https://github.com/mame/
Twitter: @mametter

Judges' comments:

To use:

make

./prog <a number of arguments>

Try:

./prog @ @ @ @ @ @

./prog @ @ @ @ @ @ @ @ @ @ @ @

./prog $(perl -e 'print "@ " x (2*3*5*7);')

./prog $(< Makefile)

Selected Judges Remarks:

For this one liner it is best to avoid prime numbers. The output groups factors in the x-y dimensions. How many factors can be represented before you run out of command line argument space? How could you modify the program to experiment with numbers that have more or larger factors?

Author’s comments:

Visual factorization 1-liner. Try:

gcc -o prog prog.c
./prog @
./prog @ @
./prog @ @ @
./prog @ @ @ @
./prog @ @ @ @ @ @
./prog @ @ @ @ @ @ @ @
./prog @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

Inspired by Animated Factorization Diagrams.

EDIT: prog.orig.c is the original version that I submitted. Gil Dogon kindly improved it during the review. Thank you!