xoox | transform, anything

You might have seen a strip of cable across the road that the DOT uses to count vehicles passing by that road each day. It counts each change in pressure as an axle. Small (car), medium (pickups and vans) and large (trucks) vehicles have different axle patterns so that the DOT can distinguish what kind of vehicles pass by in addition to the number of each.

Write a program that will emulate this car counter. For this program, there will be a continuous string of characters (split up in 10 lines of 50 characters each) in which “x” will represent space between bumps and the “o” will represent a “bump” of an axle. Small vehicles will have the pattern “oo” surrounded by any number of x’s. Medium vehicles will have the pattern “oxo” surrounded by x’s. Large vehicles will have the pattern “oxoxxooo”. To make it easier, a vehicle will not be split across different lines of data. For example, the following represents 2 small vehicles, followed by 2 medium vehicles, and lastly one large vehicle: xooxxxxooxxxxoxoxxxxoxoxxxxxxxoxoxxoooxxxxxxxxxxxx

Input:

There are 10 lines of data, each 50 characters long.

  line1 = “xooxxxxooxxxxoxoxxxxoxoxxxxxxxoxoxxoooxxxxxxxxxxxx”
  line2 = “ooxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”
  line3 = “oxoxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”
  line4 = “oxoxxoooxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”
  line5 = “xxxoxoxxoooxxxxxxoxoxxoooxxxxxxxxoxoxxoooxxxxxxxxx”
  line6 = “xoxoxxoooxxxxxooxxxooxxooxxooxxxxxooxxxxooxxxxooxx”
  line7 = “oxoxxoxoxxoxoxxoxoxxoxoxxxxxxxoxoxxxxxoxoxxxxxoxox”
  line8 = “xooxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxoo”
  line9 = “xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”
  line10 = “xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxoxoxxooo”

Output:

  12 small
  11 medium
  7 large

Here's what I've got so far but I couldn't print the output I wanted: