Driver program
let arr = [ 4 , 5 , 6 , 7 , 8 , 9 , 1 , 2 , 3 ] ; let n = arr . length ; let key = 6 ; let i = search ( arr , 0 , n - 1 , key ) ; if ( i != - 1 ) document . write ( " " + i + " " ) ; else document . write ( " " ) ;