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| -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 |