Day 1

01/02.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+array=()
+while read line; do
+  array+=($line)
+done
+array_length=${#array[@]}
+
+prev=0
+found=0
+for i in $(seq $array_length); do
+  if [ $((i-2)) -gt $array_length ]; then
+    break
+  fi
+  current=$((array[i-1]+array[i]+array[i+1]))
+  if [ $prev -gt 0 ] && [ $current -gt $prev ]; then
+    found=$((found+1))
+  fi
+  prev=$current
+done
+
+echo $found