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2. How do I generate random integers within a specific range in Java...

   stackoverflow.com/questions/363681

   The Math.Random class in Java is 0-based. So, if you write something like this: Random rand = new Random(); int x = rand.nextInt(10); x will be between 0-9 inclusive. So, given the following array of 25 items, the code to generate a random number between 0 (the base of the array) and array.length would be:

3. java - Math.random() explanation - Stack Overflow

   stackoverflow.com/questions/7961788

   Math.random() returns a number between zero and one. If I want to return an integer between zero and hundred, I would do: (int) Math.floor(Math.random() * 101) Between one and hundred, I would do: (int) Math.ceil(Math.random() * 100) But what if I wanted to get a number between three and five? Will it be like following statement:

4. Getting random numbers in Java - Stack Overflow

   stackoverflow.com/questions/5887709

   The first solution is to use the java.util.Random class: import java.util.Random; Random rand = new Random(); // Obtain a number between [0 - 49]. int n = rand.nextInt(50); // Add 1 to the result to get a number from the required range // (i.e., [1 - 50]). n += 1; Another solution is using Math.random(): double random = Math.random() * 49 + 1; or

5. Random numbers with Math.random() in Java - Stack Overflow

   stackoverflow.com/questions/7922978

   (int)(Math.random() * max) + min gives a result between 10 and 110, while (int)(Math.random() * (max - min) + min) gives a result between 10 and 100, so they are very different formulas. What's important here is clarity, so whatever you do, make sure the code makes it clear what is being generated.

6. java - How do you use math.random to generate random ints ... -...

   stackoverflow.com/questions/8610635

   For your code to compile you need to cast the result to an int. int abc = (int) (Math.random() * 100); However, if you instead use the java.util.Random class it has built in method for you

7. java - What is the best way to generate a random float value...

   stackoverflow.com/questions/40431966

   The problem with Math.random is that it results in contention. In other words, if your code is being run concurrently with any other code that uses Math.random, your random number may have to be recomputed. The problem with new Random() is that it's creating a new Random instance every time it's called, which is extra work and more verbose.

8. How does Math.random () EXACTLY work in Java? - Stack Overflow

   stackoverflow.com/questions/47833269

   This is where math.random( ) comes in. This line of code: int random_num = (int) (Math.random() * 6) + 1; CAN generate random numbers between 1 to 6. My problem lies at (Math.random() * 6) here. I know how this code works, how Math.random() generates a double value between 0.0 to 1.0. And how it multiplied by 6, and was rounded in the end.

9. How do I have a random int from 1 to 6 using math.random() in...

   stackoverflow.com/questions/24562741

   I went to research from the Java API but it doesn't mention any bit about this or is it I am doing the wrong research? Thanks so much for reading! public int dieThrow() { int num = (int)(Math.random() *7); //returns an integer return num; }

10. Random seed Math.random in Java - Stack Overflow

    stackoverflow.com/questions/17445813

    Random seed Math.random in Java. Ask Question Asked 11 years, 5 months ago. Modified 4 years, 4 months ago.

11. java - How to randomly pick an element from an array - Stack...

    stackoverflow.com/questions/8065532

    Math.random() returns an double between 0.0 (inclusive) to 1.0 (exclusive) Multiplying this with array.length gives you a double between 0.0 (inclusive) and array.length (exclusive) Casting to int will round down giving you and integer between 0 (inclusive) and array.length-1 (inclusive)