Driver code
public static void Main ( String [ ] args ) { char [ ] str = " geeksforgeeks " . ToCharArray ( ) ; int n = str . Length ; qType1 ( 4 , ' g ' , str ) ; qType2 ( 1 , 4 , str ) ; qType2 ( 2 , 3 , str ) ; qType1 ( 10 , ' t ' , str ) ; qType2 ( 10 , 11 , str ) ; } }