package org.hwo;

public class Reverse {

	byte[] reverseTable;
	
	public Reverse()
	{
		reverseTable = new byte[256];
		buildReverseTable();
	}
	
	private void buildReverseTable()
	{
		for (short i=0;i<256;i++)
		{
			short in = i;
			byte out = 0;			
			for (int n=0;n<8;n++)
			{
				out <<= 1;
				if ((in & 0x01)==0x01)
					out |= 0x01;
				in >>= 1;
			}
			reverseTable[in] = out;
		}
		
	}
	
	public byte reverse(byte in)
	{
		short s = Unsigned.byte2short(in);
		return reverseTable[s];
	}
	
	
	
}