/*
 * Copyright 2014 The Skfiy Open Association.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.skfiy.typhon.util;

import java.util.Random;

/**
 *
 * @author Kevin Zou <kevinz@skfiy.org>
 */
public final class RandomUtils {

    private final static Random DEFAULT_RANDOM = new Random();

    /**
     *
     * @return
     */
    public static double nextDouble() {
        return nextDouble(DEFAULT_RANDOM);
    }

    /**
     *
     * @param random
     * @return
     */
    public static double nextDouble(Random random) {
        return random.nextDouble();
    }

    /**
     *
     * @param n
     * @return
     */
    public static int nextInt(int n) {
        return nextInt(DEFAULT_RANDOM, n);
    }

    /**
     *
     * @param random
     * @param n
     * @return
     */
    public static int nextInt(Random random, int n) {
        return random.nextInt(n);
    }

}