Deep copy implementation

// Implementation of deep copy
// 2004.9.2
Using system;
Using system. collections;
Class reftype {
Public string name;
Public int32 age;
Public reftype (string name, int32 age)
{
This. Name = Name;
This. Age = age;
}
}
// Type mytype implements the icloneable interface, which can be deeply copied
Class mytype: icloneable {
Public reftype R; // reference type field
Public string name; // Value Type field
Public int32 age; // Value Type field
Private arraylist Al = new arraylist ();
Public mytype (string name, int32 age ){
This. Name = Name;
This. Age = age;
R = new reftype (name, age );
This. Al. Add (this. Name );
This. Al. Add (this. Age );
This. Al. Add (this. R );
}
Public object clone ()
{
Mytype c = new mytype (this. Name, this. Age );
C. Al = new arraylist ();
C. Al. Add (this. Name );
C. Al. Add (this. Age );
C. Al. Add (this. R );
Return C;
}
Public mytype deepclone (){
Return (mytype) This. Clone ();
}
}
// Startup class
Class app {
Static void main (){
Mytype M1 = new mytype ("Zhang San", 18); // source object M1
Mytype m2 = (mytype) m1.deepclone (); // the target object m2 is cloned by M1 (deep copy ).
Console. writeline (m2.name. tostring () + "," + m2.age. tostring ());
Console. writeline (m2.r. Name. tostring () + "," + m2.r. Age. tostring ());
M1.name = "Li Si ";
M1.age = 19;
M1.r. Name = "Li Si ";
M1.r. Age = 19;
Console. writeline (m2.name. tostring () + "," + m2.age. tostring (); // The value of the Value Type field is not changed.
Console. writeline (m2.r. Name. tostring () + "," + m2.r. Age. tostring (); // The value of the reference type field has not changed.
}
}