package algs11;
import stdlib.*;
/* **********************************************************************
 *  Compilation:  javac Average.java
 *  Execution:    java Average < data.txt
 *  Dependencies: StdIn.java StdOut.java
 *
 *  Reads in a sequence of real numbers, and computes their average.
 *
 *  % java Average
 *  10.0 5.0 6.0
 *  3.0 7.0 32.0
 *  <Ctrl-d>
 *  Average is 10.5

 *  Note <Ctrl-d> signifies the end of file on Unix.
 *  On windows use <Ctrl-z>.
 *
 *************************************************************************/

public class Average {
  public static void main(String[] args) {
    //StdIn.fromString ("10.0 5.0 6.0 3.0 7.0 32.0");
    StdIn.fromFile ("data/1kints.txt");

    int count = 0;       // number input values
    double sum = 0.0;    // sum of input values

    // read data and compute statistics
    while (!StdIn.isEmpty()) {
      double value = StdIn.readDouble();
      sum += value;
      count++;
    }

    // compute the average
    double average = sum / count;

    // print results
    StdOut.println("Average is " + average);
  }
}