part6
Class SimpleRedundancy

java.lang.Object
  part6.SimpleRedundancy

All Implemented Interfaces:

Redundancy

public class SimpleRedundancy

extends java.lang.Object

implements Redundancy

A redundancy class that adds k 1-bits to an m-bit integer.

Constructor Summary

SimpleRedundancy(int m, int k)
Initialization parameters m and k.

Method Summary

boolean	ok(java.math.BigInteger x) A method to test if the value x was produced by protect().
java.math.BigInteger	protect(java.math.BigInteger x) A method to add redundancy to a big integer x.
java.math.BigInteger	recover(java.math.BigInteger x) A method to recover a big integer value from a redundant value x produced by protect().

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleRedundancy

public SimpleRedundancy(int m,
                        int k)
                 throws java.lang.Exception

Initialization parameters m and k.

Throws:

java.lang.Exception

Method Detail

protect

public java.math.BigInteger protect(java.math.BigInteger x)
                             throws java.lang.Exception

Description copied from interface: Redundancy

A method to add redundancy to a big integer x.

Specified by:

protect in interface Redundancy

Throws:

java.lang.Exception

recover

public java.math.BigInteger recover(java.math.BigInteger x)
                             throws java.lang.Exception

Description copied from interface: Redundancy

A method to recover a big integer value from a redundant value x produced by protect().

Specified by:

recover in interface Redundancy

Throws:

java.lang.Exception - if the value x was not created by protect().

ok

public boolean ok(java.math.BigInteger x)
           throws java.lang.Exception

Description copied from interface: Redundancy

A method to test if the value x was produced by protect().

Specified by:

ok in interface Redundancy

Throws:

java.lang.Exception