Question

Assignment Purpose

The purpose of this lab is to write a well-commented java program that demonstrates the use of loops, and generation of random integers.

Instructions

1. You are taking some time off from your paint business and currently are on vacation in Bahamas.
2. You decide to write a Java program that generates 10 random numbers between 1 and 20 (all integers).
3. You cannot use arrays (even if you know what they are) to store these numbers.
4. It then picks up the largest number among them and prints a multiplication table until that number.
5. While your program is generating random numbers, it keeps tracks of number of 6’s generated.
   1. If more than two 6’s are generated, your program should print “HURRAY!! DOUBLE SIXES GENERATED”.
   2. If two 6’s are not generated, it should print “SORRY!! DOUBLE SIXES NOT ENCOUNTERED”.

Sample Output 1

/*******************Bahamas Vacation Report BEGIN***************\

Generating random numbers……

4 6 3 11 9 2 6 20 11 3

“HURRAY!! DOUBLE SIXES GENERATED”

Largest random number is:           11

The multiplication table is as follows:

1    2          3          4          5          6      7          8          9          10

2    4          6          8          10        12      14        16        18        20

3    6          9          12        15        18      21        24        27        30

.

.

11 22        33        44        55        66      77        88        99        110

/*******************Bahamas Vacation Report END ***************\

Sample Output 2

/*******************Bahamas Vacation Report BEGIN***************\

Generating random numbers……

4 6 3 11 9 2 2 20 11 3

“SORRY!! DOUBLE SIXES NOT ENCOUNTERED”

Largest random number is:           11

The multiplication table is as follows:

1    2          3          4          5          6      7          8          9          10

2    4          6          8          10        12      14        16        18        20

3    6          9          12        15        18      21        24        27        30

.

.

11 22        33        44        55        66      77        88        99        110

/*******************Bahamas Vacation Report END ***************\

Answer 1

A complete functional program is given below in java. Also a screenshot of output is attached below.

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

public class Main{
  
public static void main(String args[])
{
//creating object of random class
Random rnd = new Random();
  
//creating a vector to store random numbers
Vector <Integer> v = new Vector();   
  
int min=1,max=20,count=0;
  
System.out.println("*******************Bahamas Vacation Report BEGIN***************");
System.out.println("Generating random numbers……");
  
/*this loop will generate random numbers between 1 and 20
add the generated random number in the vector
and check if the number is equal to 6, if yes: counter ++ */
for(int i=0;i<10;i++)
{   
int rand = rnd.nextInt((max-min)+1)+min;   
v.add(rand);
if(rand==6){
count++;
}
}
  
//printing the random numbers
//toString() and replace() methods are used to print
//vector elements without "[]" and comma.
System.out.println(v.toString().replace("[","").replace("]","").replace(",",""));
  
  
//checking if no of sixes is>2
if(count>=2)
{
System.out.println(" “HURRAY!! DOUBLE SIXES GENERATED” ");
}
else{
System.out.println(" “SORRY!! DOUBLE SIXES NOT ENCOUNTERED” ");
}
  
  
//finding and printing the maximum from random numbers
int largest = Collections.max(v);   
System.out.println("Largest random number is: "+largest);
  
//this loop will print the tables from 1 to largest number
for(int i=1;i<=largest;i++)
{
for(int j=1;j<=largest;j++)
{
System.out.print(i*j+"\t");
if(j>largest)
break;
}
System.out.println();
}
System.out.println("*******************Bahamas Vacation Report END ***************");
}
  
  
}