Member Avatar for kalaiselvi.v

i have used this formula to generate random number.

Integer random_number = new Integer((int)(Math.floor(Math.random() * (max - min + 1)) + min));
while(numbers.size() < noofQn ) 
{
Integer random_number = new Integer((int)(Math.floor(Math.random() * (max - min + 1)) + min));
System.out.println("Random number"+ random_number );
if(!numbers.contains(random_number))
{
numbers.add(random_number);
}
}

numbers is an arraylist.
noofQn to be displayed.
when i enter noofqn=4 when total 5 records are there it goes to infinite loop.for eg max=1 min=5 noofQn=4 it goes to an infinite loop
can anyone tell how to generate random number to add in arraylist so that it wont repeat again

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  • Latest Post Latest Post by jwenting
Member Avatar for jwenting

Why is it that you want to write your own when Java has a rather good random number generator built in?

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