exercise16_7.java

Introduction to java programming 一书中所有编程练习部分的源码

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

public class Exercise16_7 {
  public static void main(String[] args) throws IOException {
    PrintWriter output =
    new PrintWriter(new FileWriter("Exercise16_7.txt"));
    
    for (int i = 0; i < 100; i++)
      output.print((int)(Math.random() * 100000) + " ");
    
    output.close();
    
    int[] numbers = new int[100];
    BufferedReader input =
    new BufferedReader(new FileReader("Exercise16_7.txt"));
    
    Scanner scanner = new Scanner(input);
    int sum = 0;
    int i = 0;
    while (scanner.hasNext()) {
      numbers[i] = scanner.nextInt();
      i++;
    }
    
    Arrays.sort(numbers);
    
    for (int j = 0; j < numbers.length; j++)
      System.out.println(numbers[j]);   
  }
}