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public static void Main() 

Console.WriteLine(Foo(30)); 

public static int Foo(int i) 

if (i <= 0) 
return 0; 
else if(i > 0 && i <= 2) 
return 1; 
else return Foo(i -1) + Foo(i - 2); 


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foreach (System.Windows.Forms.Control control in this.Controls)
{
if (control is System.Windows.Forms.TextBox)
{
System.Windows.Forms.TextBox tb = (System.Windows.Forms.TextBox)control ; 
tb.Text = String.Empty ;
}
}
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int [] array = new int 
;
int temp = 0 ;
for (int i = 0 ; i < array.Length - 1 ; i++)
{
for (int j = i + 1 ; j < array.Length ; j++)
{
if (array[j] < array[i])
{
temp = array[i] ;
array[i] = array[j] ;
array[j] = temp ;
}
}
}
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