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using System;
using System.Collections;
delegate bool predicate (object a);
class X {
public static int Main ()
{
ArrayList a = new ArrayList ();
for (int i = 0; i < 10; i++)
a.Add (i);
ArrayList even = Find (delegate (object arg) {
return ((((int) arg) % 2) == 0);
}, a);
Console.WriteLine ("Even numbers");
foreach (object r in even){
Console.WriteLine (r);
}
if (even.Count != 5)
return 1;
if (((int)even [0]) != 0 ||
((int)even [1]) != 2 ||
((int)even [2]) != 4 ||
((int)even [3]) != 6 ||
((int)even [4]) != 8)
return 2;
return 0;
}
static ArrayList Find (predicate p, ArrayList source)
{
ArrayList result = new ArrayList ();
foreach (object a in source){
if (p (a))
result.Add (a);
}
return result;
}
}
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