aoc-2023-day-01

aoc-2023-day-01-1.sh

echo "+/" $(sed -e 's/[^0-9]//g' -e 's/^\(.\)$/\1\1/' -e 's/^\(.\).*\(.\)$/\1\2/' ~/aoc-1.input) | ivy

aoc-2023-day-01-2.awk

#!/usr/bin/awk -f

BEGIN { total = 0 }
{
  a=""
  b=""
  $0=$0$0
  for (i=1; i <= length($0); i++) {
    t = substr($0, 1, i)
    if (t ~ /[1-9]/) { a = substr($0, i, 1); break; }
    if (t ~ /one/)   { a = 1; break; }
    if (t ~ /two/)   { a = 2; break; }
    if (t ~ /three/) { a = 3; break; }
    if (t ~ /four/)  { a = 4; break; }
    if (t ~ /five/)  { a = 5; break; }
    if (t ~ /six/)   { a = 6; break; }
    if (t ~ /seven/) { a = 7; break; }
    if (t ~ /eight/) { a = 8; break; }
    if (t ~ /nine/)  { a = 9; break; }
  }
  for (i=length($0); 0 < i; i--) {
    t = substr($0, i, length($0)-i+1)
    if (t ~ /[1-9]/) { b = substr($0, i, 1); break; }
    if (t ~ /one/)   { b = 1; break; }
    if (t ~ /two/)   { b = 2; break; }
    if (t ~ /three/) { b = 3; break; }
    if (t ~ /four/)  { b = 4; break; }
    if (t ~ /five/)  { b = 5; break; }
    if (t ~ /six/)   { b = 6; break; }
    if (t ~ /seven/) { b = 7; break; }
    if (t ~ /eight/) { b = 8; break; }
    if (t ~ /nine/)  { b = 9; break; }
  }

  total = total + sprintf("%s%s", a, b)
}
END { printf("%d\n", total) }