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| author | June McEnroe <june@causal.agency> | 2019-12-04 02:42:48 -0500 |
|---|---|---|
| committer | June McEnroe <june@causal.agency> | 2019-12-04 02:46:55 -0500 |
| commit | d9f19857e499a38400a8cad455d64c744f254e68 (patch) | |
| tree | dd2963c92411234da1784b43b00c0b6327a38e19 /2019/day04.sh | |
| parent | Solve day 4 part 2 (diff) | |
| download | aoc-d9f19857e499a38400a8cad455d64c744f254e68.tar.gz aoc-d9f19857e499a38400a8cad455d64c744f254e68.zip | |
Add alternate shell solution for day 4
Diffstat (limited to '')
| -rw-r--r-- | 2019/day04.sh | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/2019/day04.sh b/2019/day04.sh new file mode 100644 index 0000000..6cd264a --- /dev/null +++ b/2019/day04.sh @@ -0,0 +1,11 @@ +IFS=- +read min max +seq "$min" "$max" \ + | grep '^1*2*3*4*5*6*7*8*9*$' \ + | grep -E '00|11|22|33|44|55|66|77|88|99' \ + | wc -l +seq "$min" "$max" \ + | grep '^1*2*3*4*5*6*7*8*9*$' \ + | sed 's/.*/x&x/' \ + | grep -E '[^0]00[^0]|[^1]11[^1]|[^2]22[^2]|[^3]33[^3]|[^4]44[^4]|[^5]55[^5]|[^6]66[^6]|[^7]77[^7]|[^8]88[^8]|[^9]99[^9]' \ + | wc -l |