Question

Write a well-commented java program that demonstrates the use of loops, and generation of random integers (Code will be written in Dr. Java)

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 track of the 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

I have uploaded the Images of the code, Typed code and Output of the Code. I have provided explanation using comments(read them for better understanding)

.

Images of the Code:

Note: If the below code is missing indentation please refer code Images

Typed Code:

public class Bahamas
{
   public static void main(String[] args) {
   // a value is used to store random numbers
   //max and min values used to store range of random numbers
   //c is used for count of "6" and high is used to store largest number among all random numbers
   int a = 0,max = 20, min = 1, c = 0, high = 0;
       System.out.println("/**************************Bahamas Vacation Report BEGIN**********************\\");
       System.out.println("Generating random numbers……");
       //for loop will iterate till 10 times because we need 10 random variables
       //i value initialized to 0 and increment till it reaches 10
       for(int i = 0; i< 10;i++)
       {
       //storing random value in a
       //math package is used for random numbers
       //math.random number give the double value of greater than 0.0 and less than 1.0
       //for example :- random number = 0.9 , max = 20 , min = 1
       // (0.9 *(20 - 1)) + 1 ==> 17.1 + 1 ==> 18.1
       //(int) 18.1 ==> 18
       a = (int) ((Math.random() * (max - min)) + min);
       //printing the random number
       System.out.print(a +" ");
       //if the random number is 6
       if(a == 6)
       {
       //count will be increased by 1
       c++;
       }
       //initially high = 0, if high < random number
       if(high < a)
       {
       //then the random number is stored in high
       //largest number is stored at the end
       high = a;
       }
       }
       System.out.println();
       //if c is greater than or equal to 2
       if(c >= 2)
       {
       //printing the line
       System.out.println("HURRAY!! DOUBLE SIXES GENERATED");
       }
       //else
       else
       {
       //printing this line
       System.out.println("SORRY!! DOUBLE SIXES NOT ENCOUNTERED");
       }
       //printing largest random number
       System.out.println("Largest random number is: "+high);
       System.out.println("The multiplication table is as follows:");
       //initially j = 1
       //for loop will iterate till j becomes 10
       for(int j = 1; j<= 10; j++)
       {
       //printing 1 to 10
       System.out.print(j+"\t");
       }
       //initially k = 2
       //for loop will iterate till k becomes largest random number
       for(int k = 2; k<= high; k++)
       {
       //jumping to next line
       System.out.println();
       //printing the number
       System.out.print(k+"\t");
       //initially j = 2
       //for loop will iterate till j becomes 10
       for(int j = 2; j<= 10; j++)
       {
       //printing the multiplication of two numbers
       System.out.print((k*(j))+"\t");
      }
       }
       System.out.println();
       System.out.print("/**************************Bahamas Vacation Report END **********************\\");
   }
}
//code ended here

Output 1 :

Output 2:

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