advent-of-code

advent of code attempts
git clone git://bvnf.space/advent-of-code.git
Log | Files | Refs

1.sh (311B)

      1
      2
      3
      4
      5
      6
      7
      8
      9
     10
     11
     12
     13
     14
     15
     16
     17
     18
     19

#!/bin/sh -e

[ "$#" -gt 0 ] || {
	printf "usage: %s datafile\n" "$0" >&2
	exit 1
}


i=0
prev=0
numlarger=0
while read -r line; do
	i=$((i + 1))
	[ "$i" = 1 ] && continue
	[ "$line" -gt "$prev" ] && numlarger=$((numlarger+1))
	prev="$line"
done < "$1"

printf "of %d lines, %s are greater\n" "$i" "$numlarger"