Driver method to test above
public static void Main ( String [ ] args ) { String [ ] arr = { " contribute " , " geeks " , " ide " , " practice " } ; String x = " ide " ; int result = binarySearch ( arr , x ) ; if ( result == - 1 ) Console . WriteLine ( " Element ▁ not ▁ present " ) ; else Console . WriteLine ( " Element ▁ found ▁ at ▁ " + " index ▁ " + result ) ; } }