// BEGIN: cycles.ma1

 package org.apidesign.cycles.array;

 import java.io.IOException;

 import java.io.OutputStream;

 import org.apidesign.cycles.crypt.Encryptor;

 public class MutableArray {

     private byte[] arr;

     public MutableArray(byte[] arr) {

         this.arr = arr;

     }

     public void xor(byte b) {

         for (int i = 0; i < arr.length; i++) { arr[i] ^= b; }

     }

     public void and(byte b) {

         for (int i = 0; i < arr.length; i++) { arr[i] &= b; }

     }

     public void or(byte b) {

         for (int i = 0; i < arr.length; i++) { arr[i] |= b; }

     }

     public void encrypt(OutputStream os) throws IOException {

         Encryptor en = new Encryptor();

         byte[] clone = (byte[]) arr.clone();

         en.encode(clone);

         os.write(clone);

     }

 }

 // END: cycles.ma1