Java Random Double randDouble()

Description

rand 0-1 double

License

Open Source License

Declaration

public static final double randDouble() 

Method Source Code

//package com.java2s;
/*//from  ww  w  . j a  v a2  s . c o  m
 * Copyright (C) 2015 William Matrix Peckham
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

import java.util.Random;

public class Main {
    /**
     * random for random functions.
     */
    public static final Random rand = new Random();

    /**
     * rand 0-1 double
     *
     * @return
     */
    public static final double randDouble() {
        return (double) randInt() / (double) Integer.MAX_VALUE;
    }

    /**
     * rand double l-h
     *
     * @param l
     * @param h
     * @return
     */
    public static final double randDouble(double l, double h) {
        double randd = randDouble();
        return randd * (h - l) + l;
    }

    /**
     * rand int between 0 and max value
     *
     * @return
     */
    public static final int randInt() {
        return rand.nextInt(Integer.MAX_VALUE);
    }

    /**
     * rand int between l=h
     *
     * @param l
     * @param h
     * @return
     */
    public static final int randInt(int l, int h) {
        return (int) (randDouble(l, h));
    }
}

Related

1. getDoubleInRange(double minValue, double maxValue)
2. getDoubleSpecial()
3. getRandomDouble()
4. getRandomDouble(double min, double max)
5. rand(double seed)
6. randDouble(double min, double max)
7. randDouble(double min, double max)
8. randDouble(double min, double max)
9. randDouble(double min, double max)