package speiger.src.coreengine.math;

import java.util.Arrays;
import java.util.List;

import speiger.src.collections.ints.lists.IntList;
import speiger.src.collections.objects.lists.ObjectArrayList;

public class ArrayUtil
{
	public static int[] fromTo(int from, int to)
	{
		int[] result = new int[to - from];
		for(int i = 0,m=result.length;i<m;i++)
		{
			result[i] = from + i;
		}
		return result;
	}
	
	public static int sum(int...values)
	{
		int result = 0;
		for(int index : values)
		{
			result += index;
		}
		return result;
	}
	
	public static byte[] fill(byte[] array, byte value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static short[] fill(short[] array, short value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static int[] fill(int[] array, int value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static long[] fill(long[] array, long value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static float[] fill(float[] array, float value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static double[] fill(double[] array, double value)
	{
		Arrays.fill(array, value);
		return array;
	}
	
	public static <T> List<T> makeList(IntList indexes, List<T> entries)
	{
		List<T> result = new ObjectArrayList<T>(indexes.size());
		for(int i = 0,m=indexes.size();i<m;i++)
		{
			result.add(entries.get(indexes.getInt(i)));
		}
		return result;
	}
}