Question

// problem2.java

import java.util.*;


public class problem_a
{
  public static void main(String[] args)
  {
    // test the smallest method
    System.out.print("smallest(1, 0, 2) -> ");
    System.out.println( smallest(1, 0, 2) );
    // test the average method
    System.out.print("average(95, 85, 90) -> ");
    System.out.println( average(95, 84, 90) );
  } // end main
  
  /*
   * smallest(double, double, double) -> double
   * 
   * method is given 3 numbers, produces the smallest of the three
   * 
   * examples:
   *     smallest(1, 0, 2) -> 0.0
   */
  public static double smallest(double x, double y, double z)
  {
    // declare your minimum
        ** ENTER CODE HERE**
    
    // calculate minimum as smallest of x and y
        ** ENTER CODE HERE**
    
    // re-calculate minimum as smallest of minimum and z
        ** ENTER CODE HERE**
    
    //return your minimum
        ** ENTER CODE HERE**
  } // end smallest
  
  /*
   * average(double, double, double) -> double
   * 
   * method is given 3 numbers, produces the smallest of the three

   */
  public static double average(double x, double y, double z)
  {
    // declare your result
        ** ENTER CODE HERE**
    
    // calculate the average of x, y and z
        ** ENTER CODE HERE**
    
    // return your result;
        ** ENTER CODE HERE**
  } // end average
} // end class problem_a

Answer 1

Java code:-

import java.util.*;
public class problem_a
{
   // problem2.java
public static void main(String[] args)
{
    // test the smallest method
    System.out.print("smallest(1, 0, 2) -> ");
    System.out.println( smallest(1, 0, 2) );
    // test the average method
    System.out.print("average(95, 85, 90) -> ");
    System.out.println( average(95, 85, 90) );
} // end main

/*
   * smallest(double, double, double) -> double
   *
   * method is given 3 numbers, produces the smallest of the three
   *
   * examples:
   *     smallest(1, 0, 2) -> 0.0
   */
public static double smallest(double x, double y, double z)
{
    // declare your minimum
        double minimum=x;
  
    // calculate minimum as smallest of x and y
        if (minimum>y)
        {
            minimum=y;
        }
  
    // re-calculate minimum as smallest of minimum and z
         if (minimum>z)
        {
            minimum=z;
        }
  
  
    //return your minimum
       return minimum;
} // end smallest

/*
   * average(double, double, double) -> double
   *
   * method is given 3 numbers,calculate the average of x, y and z

   */
public static double average(double x, double y, double z)
{
    // declare your result
         double result=0;
  
    // calculate the average of x, y and z
        result=(x+y+z)/3;
  
    // return your result;
        return result;
} // end average
} // end class problem_a

Screenshot of output:-