//This program goes through the file midterm1.txt line by line.
// Each line has a score range followed by all the scores that were
// recieved in that range. For example:
//    40–49	42	42	
// This line has two scores, both 42 that were recieved in the 
// range 40-49.
// This program counts the scores and outputs a line for each range
// showing the range and the number of scores. For example:
//    40–49: 2
import java.io.*;
import java.util.*;

public class CountGrades {
   public static void main(String[] args) throws FileNotFoundException {
   
      //Create a file scanner on the file midterm1.txt
      Scanner fileScan = new Scanner(new File("midterm1.txt"));
      
      // a while loop to go find each line in the file
      while(fileScan.hasNext()){ //while there are still tokens in the file
         // get the line
         String line = fileScan.nextLine();
         // create a scanner to let us loop over the tokens in that line
         Scanner lineScan = new Scanner(line);
         
         // the first token in the line is the range
         String range = lineScan.next();
         
         // count the remaining tokens in the line
         int scoreCount = 0;
         while(lineScan.hasNext()){ //while there are still tokens in the line
            //pull off a score and don't save it (we are only counting)
            lineScan.nextInt();
            scoreCount++; // add one to the count since we just pulled off a score
         }
         
         // for each line we print the range and the count of scores
         System.out.println(range + ": " + scoreCount);
      }
      
   }

}