package org.hwo;

import java.lang.reflect.Array;

public class ArrayHelper {

	
	public static Integer[] box(int[] a){
		Integer[] r = new Integer[ a.length];
		for (int i=0;i<a.length;i++){
			r[i] = a[i];
		}
		return r;
	}
	public static int[] unbox(Integer[] a){
		int[] r = new int[ a.length];
		for (int i=0;i<a.length;i++){
			r[i] = a[i];
		}
		return r;
	}
	
	public static byte[] unbox(Byte[] bytes){
		byte[] t = new byte[ bytes.length ];
		
		for (int i=0;i<t.length;i++)
			t[i] = bytes[i];
		
		return t;
	}

	public static Byte[] box(byte[] bytes){
		Byte[] t = new Byte[ bytes.length ];
		
		for (int i=0;i<t.length;i++)
			t[i] = bytes[i];
		
		return t;
	}
	
	public static <T> T[] cast(Object[] src,T[] dstType){
		T[] dst;
		
		try {
			dst = (T[])Array.newInstance(dstType.getClass().getComponentType(), src.length);
			for (int i=0;i<src.length;i++){
				System.err.println(src[i].getClass().getCanonicalName());
				dst[i] = (T)src[i];
			}
			return dst;
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
		return null;
	}
	
	public static <T> int indexOf(T[] array,T element){
		for (int i=0;i<array.length;i++){
			if (array[i] == element){
				return i;
			}
		}
		return -1;
	}
	
}