From 76089ce733a0b0945ff9f805cb3f5e37cd78d5f3 Mon Sep 17 00:00:00 2001 From: setop Date: Tue, 6 Dec 2022 20:20:47 +0100 Subject: [PATCH] day 6, AWK solution, small optim --- d06/exec.awk | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/d06/exec.awk b/d06/exec.awk index 99ad33c..19de42a 100644 --- a/d06/exec.awk +++ b/d06/exec.awk @@ -2,14 +2,14 @@ BEGIN { W = 14 } { for (i=1; i<=length($1); i++) { window = substr($1,i,W) - # compare each char of window to all char of window + # compare each char of the window to rest of the window S = 0 # to count match for (j=1; j<=W; j++) { - for (k=j; k<=W; k++) { + for (k=j+1; k<=W; k++) { S+= (substr(window,j,1) == substr(window,k,1)) ? 1 : 0 } } - if (S == W) { # if each char match only with itsef + if (S == 0) { # if each char match only with itsef print i + W - 1 next # finish }