Java Utililty Methods Random Int

List of utility methods to do Random Int

  1. HOME
  2. Java
  3. R
  4. Random Int

Description

The list of methods to do Random Int are organized into topic(s).

Method

intrandom(int min, int max)
random 
return (int) (min + (max - min + 1) * Math.random());
intrandom(int min, int max)
random 
double rand = Math.random();
double range = max - min;
double delta = range * rand;
return (int) Math.rint((min + delta));
intrandom(int n)
Get a random integer between 0 and n-1. 
return (int) Math.floor(n * Math.random());
intrandom(int n)
random 
if (n == 1) {
    return 0;
long r = ((nextLong() >>> 32) * n) >> 32;
return (int) r;
double[]random(int numSamples)
random 
double[] x = null;
if (numSamples > 0) {
    x = new double[numSamples];
    for (int i = 0; i < numSamples; i++)
        x[i] = Math.random();
return x;
intrandom(int range)
sets a random amount in the range specified 
if (range <= 0) {
    return 0;
return (int) (Math.random() * (range + 1));
intrandom(int start, int end)
random 
return (int) Math.round(Math.random() * (end - start - 1)) + start;
intrandom(int theRange)
random 
double myRandomNumber = Math.random() * (double) (theRange + 1);
return (int) myRandomNumber;
intrandom(int x)
Returns a random real number between 0 and x. 
return (int) (Math.floor(Math.random() * x));
intrandom(int... array)
Returns a randomly selected element from the specified int array, as defined by Math#random() . 
switch (array.length) {
case 0:
    return 0;
case 1:
    return array[0];
default:
    int selection = (int) (Math.random() * array.length);
    return array[selection];
...