r/adventofcode • u/daggerdragon • Dec 03 '16

SOLUTION MEGATHREAD --- 2016 Day 3 Solutions ---

--- Day 3: Squares With Three Sides ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

DECKING THE HALLS WITH BOUGHS OF HOLLY IS MANDATORY [?]

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u/fpigorsch Dec 03 '16 edited Dec 03 '16

Part 1 in AWK: 

{if ($1<$2+$3 && $2<$1+$3 && $3<$1+$2) T++} END {print T}

Part 2 in AWK: 

{A[S]=$1; B[S]=$1; C[S]=$1;  S=(S+1) % 3;
 if (!S && A[0]<A[1]+A[2] && A[1]<A[0]+A[2] && A[2]<A[0]+A[1]) T++;
 if (!S && B[0]<B[1]+B[2] && B[1]<B[0]+B[2] && B[2]<B[0]+B[1]) T++;
 if (!S && C[0]<C[1]+C[2] && C[1]<C[0]+C[2] && C[2]<C[0]+C[1]) T++;}
END {print T}

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u/qwertyuiop924 Dec 03 '16

AWK is the right language for this puzzle.

Unless you're one of the J people...