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package net.dongliu.commons.collection;

import java.lang.reflect.Array;
import java.util.Collection;

/**
 * Utils for Array
 *
 * @author Liu Dong
 */
public final class ArrayUtils {

    /**
     * create new byte array
     */
    public static byte[] byteArray(byte... values) {
        return values;
    }

    /**
     * create new char array
     */
    public static char[] charArray(char... values) {
        return values;
    }

    /**
     * create new short array
     */
    public static short[] shortArray(short... values) {
        return values;
    }

    /**
     * create new int array
     */
    public static int[] intArray(int... values) {
        return values;
    }

    /**
     * create new long array
     */
    public static long[] longArray(long... values) {
        return values;
    }

    /**
     * create new float array
     */
    public static float[] floatArray(float... values) {
        return values;
    }

    /**
     * create new double array
     */
    public static double[] doubleArray(double... values) {
        return values;
    }

    /**
     * create new array
     */
    @SafeVarargs
    public static  T[] array(T... values) {
        return values;
    }

    /**
     * convert collections to array
     */
    public static  T[] toArray(Collection c, Class cls) {
        @SuppressWarnings("unchecked")
        T[] array = (T[]) Array.newInstance(cls, c.size());
        int i = 0;
        for (T value : c) {
            array[i++] = value;
        }
        return array;
    }



}