Generating Multiple Random Numbers

[Flashkicks]

This is an assignment I have, and the following is the coding. I can not get the "generate 5 random numbers between 1-10" part. [Just ignore the other stuff.. sqrRoot, absolute..etc..] Any help would be nice. I have my program to work, yes; but I think java should be far more capable of figuring out mulitple values in one line rather than having to write it out 5 times. I mean, even Turing just simply uses a for statement.. Can someone tell me how I would use a "for statement" for this?

code:

// The "PowerExample" class. public class PowerExample {     public static void main (String [] args)     {         // declare variables         int valueOne, valueTwo;         double answer, randomValue1, randomValue2, randomValue3, randomValue4, randomValue5;         //initialize         valueOne = 4;         valueTwo = 12;         //use Math class to find 4^12         answer = Math.pow (4, 7);         System.out.println (answer);         System.out.println (Math.sqrt (12)); // square root of 12         System.out.println (Math.abs (4 - 12)); // absolute of 4-12         /* Math.random () */ //  this whole secion here..  This is Ugly!         randomValue1 = ((Math.random () * 10) + 1); // displays 5 random nums         randomValue2 = ((Math.random () * 10) + 1); // displays 5 random nums         randomValue3 = ((Math.random () * 10) + 1); // displays 5 random nums         randomValue4 = ((Math.random () * 10) + 1); // displays 5 random nums         randomValue5 = ((Math.random () * 10) + 1); // displays 5 random nums         System.out.println (randomValue1 + "  " + randomValue2 + "  " + randomValue3);         System.out.println (randomValue4 + "  " + randomValue5);     } // main method } // PowerExample class //experiment with the various methods in the Math class. //1.  Find the square root of 12 //2.  Find the absolute value of 4 - 12 //3.  Declare a real (double) variable randomValue.  Your program should display five random values between 0 and 10. //4.  Find 5 random values between 11 and 95 //5.  Make up two questions and display the answer.

~Flashkicks

[Tony]

Java:

for(int i=0;i<5;i++)      randomValue[i] = ((Math.random () * 10) + 1);

btw, if you want all 5 digits in a single statement, you can pick a random numbet between (10000 and 99999) and split it up by digits

[Flashkicks]

Wow I think thats the fastest reply Iv ever seen .. Thanks once again Tony. Your the man ..lol. I shall go try it and I think it will work. I was just playing around with the for loops myself but I couldnt get it to work. So then I tried something called a "while loop" or something.. Still no luck.. But thanks man! I appreciate it!
~Flashkicks

:: UpDated ::
Okay- Tony. I am sorry but it is still not working.. Says randomValue is not an array type. I changed it to int and whatnot [also got rid of the randomValue1, and randomValue2 etc] and nothing will work.. Do you think you could try editing it into my program?. I am sorry to bug you. I shall keep trying..

::: UpDated AGAIN :::
Okay I am sorry to do this but I got it to work.. It was very simple. however, if you look below I am supposed to now do between 11-95 .. THAT--is where I am stuck. I pulled out the ol' reference book and everything. So please.. Someone help..lol This is why i hate Java. Iv always hated Java and I still say its EVIL!!!

[Tony]

Java:

int randomValue[4]; for(int i=0;i<5;i++)      randomValue[i] = ((Math.random () * (95-11)) + 11);

[wtd]

tony wrote:

Java:

int randomValue[4]; for(int i=0;i<5;i++)      randomValue[i] = ((Math.random () * (95-11)) + 11);

That's just asking for problems. There's only room for 4 values in that array, but you run the loop 5 times.

Java:

// Java 1.5 import java.lang.*; import java.util.*; public class RandomNumbers {   public static void Main()   {     ArrayList<Integer> randomValue = new ArrayList<Integer>(5);     for (int i = 0; i < 5; i++)       randomValue.add((Math.random() * (95 - 11)) + 11);   } }

[Tony]

aren't Java arrays 0-index? (0,1,2,3,4 ~ 5 elements).

anyways, wtd knows what he's doing. I'm just stabbing in the dark (haven't actually done any Java or even C++ for that matter in a while)

[wtd]

tony wrote:

aren't Java arrays 0-index? (0,1,2,3,4 ~ 5 elements).

Yes, but the number you give in the declaration/initialization is the capacity of the array, not the last index.

Of course, I'd still prefer Ruby.

code:

randomValue = Array.new(4) { rand * (95 - 11) + 11 }

[Flashkicks]

Kay I tried all of your guys' stuff and some of it wasa a bit complicating, while other stuff did kinda work.. So I took your coding and changed it a tad bit and now I got it working. Heres what I used:

code:

for (int i = 0 ; i < 5 ; i++)             System.out.println ((Math.random () * (84)) + 11); // Prints out 5 random numbers [11-95]

And this did the job fiiine
Thanks for all your help~
~Flashkicks

[wtd]

Flashkicks wrote:

Kay I tried all of your guys' stuff and some of it wasa a bit complicating, while other stuff did kinda work.. So I took your coding and changed it a tad bit and now I got it working. Heres what I used:

code:

for (int i = 0 ; i < 5 ; i++)             System.out.println ((Math.random () * (84)) + 11); // Prints out 5 random numbers [11-95]

And this did the job fiiine
Thanks for all your help~
~Flashkicks

Note: while it may be good Turing style to put space between a function/procedure and the parens that follow it, the more generally accepted style for Java/C/C++/etc. is for there to be no space. Additionally, you can remove a number of parens due to the order of operations. Multiplication is performed first, then addition.

code:

for (int i = 0 ; i < 5 ; i++)             System.out.println(Math.random() * 84 + 11);