random question

[divinity02]

hi all (james)

i have another question: if yuh want to use the random numbers, it goes like dis: random generator = new random() or it have the math.random right my questions are

how do u get to generate the 2, 3, 4- times table,

[JamesCherrill]

?

[divinity02]

hi james
what I meant is that I know random generator = new random would drop random numbers, the question is there a way that u can get to drop numbers that would be the 2 times, tables along with the rest of tables
ah know it may sound kinda weird to you and u probably thinking i am crazy

[JamesCherrill]

Not crazy, but I have no idea what you are talking about

[divinity02]

hi james
it is that I am doing over the multiplication game program in java right, and it has three levels right, easy meduim and hard.
the difficult-level easy has three rounds with
4 random questions from the 2 times table- this is round 1,
4 random questions from the 3 times table - this is round 2
4 random questions from the 4 times table -this is round 3

difficult level meduim has 4 game round
3 random questions from the 5 times table - this is round 1
3 random questions from the 6 times table - this is round 2
3 random questions from the 7 times table - this is round 3
3 random questiosn from the 8 times table - this is round 4

difficult level hard has 4 games round
3 random question from the 9 times table - this is round 1
3 random questions from the 10 times table - this is round 2
3 random questions from the 11 times table - this is round 3
3 random questions from the 12 times table - this is round 4

how do i get the random generator to do exactly that. i manage to get to generate some random number to multiply, it randomly generating from the 13 and sometimes the 14 times table which is what i dont want exactly. can you guide me in the right direction as to how do get it to do exaclty dat

[JamesCherrill]

So all you need is to generate random ints in the range 2-12?
Create a Random and call its nextInt method as often as needed. nextInt(n) generates a number between 0 and (n-1) inclusive, so you need a tiny amount of arithmetic to get 2-n inclusive, eg
Random r = new Random();
int aNumber = r.nextInt(n-1) +2; //random number between 0 and n inclusive

[divinity02]

thank you very much j, sometimes ah wish that i can actually see u

[JamesCherrill]

You would be very disappointed :)

[divinity02]

and why would i be, let me be the judge of that j. but thanks anyway

[divinity02]

hi j
i have tried it both ways and this is my results.

        String welcomemsg, welcome="";
        int count =0, user1age, user2age;
        int sum_scores_user1name=0; // depend on the number of chances given
        int corrans = 0, incorrans =0; // to hold all of the correct answer
        int scores1 = 0; // to keep track of the scores made in the game
        int wrongans =0; // to hold the number of wrong answer entered
        int countlevel=0; // which level of the game the user choose to play
        int passmark = 50, rand1, rand2,passmark_user1name, passmark_user2name;
        int userans = 0, correct = 0;
        int ans = 0, n = 2, ques = 0;
        String  user1name ; 
        String user2name;
        int num1 = 0, num2 =0,  ans1;

        // declaring of the variables that will be use during the program

        // introduction and rules of the game to the players
        System.out.println("Hi everyone, welcome to Aunty Bae Multiplication quiz!!!!!!!");
        System.out.println("Here is where you learn your multiplication table");
        System.out.println("Rules of the games");
        System.out.println("Student should be between the ages of 6 to 12 years old");
        System.out.println("Each student are given three chances each");
        System.out.println("the game will be forfeited if the criteria doesnt met");


        System.out.println("***************************************************************");

        System.out.println("hi what is your name");
        user1name = userinput.next();
        System.out.println("my what a beautiful name you have got there "+ user1name);
        System.out.println("now can you tell me how old are you "+ user1name);
        user1age = userinput.nextInt();
        System.out.println("what I wouldnt do to be that age again");

        while(user1age < 6 || user1age < 12)
        {
           System.out.println("wow, incorrect age " + user1name);
            System.out.println("you cannot play this game");
           break;
        }
        while(user1age > 6 || user1age < 12)
        {
            System.out.println("please re-enter the correct age this time "+ user1name);
            user1age = userinput.nextInt();
            System.out.println("nice, lovely, now we are getting somewheere, you can play");
            break;
        }

        System.out.println("hi what is your name");
        user2name = userinput.next();
        System.out.println("what a unique name you have there "+ user2name);
        System.out.println("now can you tell me your age  " + user2name);
        user2age = userinput.nextInt();
        System.out.println("I would surely give anything to go back to my childhoold days");

        while(user2age < 6 || user2age > 12)
        {
          System.out.println("okay, stay calm, stay cam, dont blow your top, incorrect age "+user2name);
          System.out.println("boom!!!! you cannot play this game");
          break;
        }
        while(user2age > 6 || user2age < 12)
        {
            System.out.println("okay I am calm now, please re-enter your age again "+user2name);
            user2age = userinput.nextInt();
            System.out.println("tadaw!!! yuh in d game, come play");
            break;
        }

        System.out.println("welcome students to round 1  " + user1name + " and " + user2name);

        System.out.println(" which one of you, students would like to go first will it be you "+user1name + " or "+ user2name);


        Random randgen = new Random();

        int number = randgen.nextInt(12)+ 2;



        {
           System.out.println(user1name+" we are going to start with you "+ "what is "+ num1+ "*"+ num2+ "=?"); 
           ans = userinput.nextInt();

           if(ans == num1 * num2)
         {
            System.out.println("excellent!!!  correct "+user1name+ " keep up the good work "+ "you just scored 250 points");
            corrans+= 250;
            scores1++;
         }
        else if(ans != num1 * num2)
        {
             System.out.println("oop!! incorrect answer "+user1name+ " try again");
            wrongans-= 125;
            scores1++;

        }
           System.out.println(user2name+"  hi it is your turn");

        }

            here is the output
            hi what is your name
larissa
my what a beautiful name you have got there larissa
now can you tell me how old are you larissa
5
what I wouldnt do to be that age again
wow, incorrect age larissa
you cannot play this game
please re-enter the correct age this time larissa
10
nice, lovely, now we are getting somewheere, you can play
hi what is your name
kadeem
what a unique name you have there kadeem
now can you tell me your age  kadeem
14
I would surely give anything to go back to my childhoold days
okay, stay calm, stay cam, dont blow your top, incorrect age kadeem
boom!!!! you cannot play this game
okay I am calm now, please re-enter your age again kadeem
11
tadaw!!! yuh in d game, come play
welcome students to round 1  larissa and kadeem
I have a question, which one of you would like to go first will it be you larissa or kadeem
larissa we are going to start with you what is 0*0=?
1
oop!! incorrect answer larissa try again
kadeem  hi it is your turn
BUILD SUCCESSFUL (total time: 30 seconds)

am only getting zero right through, no other numbers are generating, why is that. tried it both ways.

[JamesCherrill]

Line 77 you generate one random number "number"
Then you ask the user about two completely different numbers "num1" and "num2" that you have not generated.