/*
 * Copyright 2010 dorkbox, llc
 *
 * 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 dorkbox.collections;


import java.util.Random;

public
class MathUtil {
    public static final Random random = new Random();

    /** Returns a random number between 0 (inclusive) and the specified value (inclusive). */
    static public int random (int range) {
        return random.nextInt(range + 1);
    }

    /** Returns a random number between start (inclusive) and end (inclusive). */
    static public int random (int start, int end) {
        return start + random.nextInt(end - start + 1);
    }

    /**
     * Returns the next power of two. Returns the specified value if the value is already a power of two.
     */
    public static
    int nextPowerOfTwo(int value) {
        return 1 << (32 - Integer.numberOfLeadingZeros(value - 1));
    }
}