// Miya Natsuhara
// 07-29-2019
// CSE142
// TA: Grace Hopper

// Reads an input file and reports the real numbers read in (skipping and reporting non-number
//    tokens) and prints out the minimum and maximum values read.  

import java.io.*;
import java.util.*;

public class FindMinAndMax {
   public static void main(String[] args) throws FileNotFoundException {
      File f = new File("data.txt");
      Scanner input = new Scanner(f);
      
      // if had guarantees about range of numbers, could also:
      //    initialize min to biggest possible number
      //    initialize max to smallest possible number
      
      double firstVal = input.nextDouble();
      System.out.println("read number: " + firstVal);
      double min = firstVal;
      double max = firstVal;
      while (input.hasNext()) {
         if (input.hasNextDouble()) {
            double nextVal = input.nextDouble();
            System.out.println("read number: " + nextVal);
            min = Math.min(min, nextVal);
            max = Math.max(max, nextVal);
         } else {
            System.out.println("skipping bad token: " + input.next());
         }
      }
      System.out.println("minimum was " + min + ", maximum was " + max);
   }
}