Position of n among the numbers made of 2 , 3 , 5 & 7 | Javascript Program position of n among the numbers made of 2 , 3 , 5 & 7 ; If number is 2 then it is on the position pos * 2 + 1 ; If number is 3 then it is on the position pos * 2 + 2 ; If number is 5 then it is on the position pos * 2 + 3 ; If number is 7 then it is on the position pos * 2 + 4 ; Driver code
function findpos ( n ) { var pos = 0 ; for ( i = 0 ; i < n . length ; i ++ ) { switch ( n . charAt ( i ) ) { case ' ' : pos = pos * 4 + 1 ; break ; case ' ' : pos = pos * 4 + 2 ; break ; case ' ' : pos = pos * 4 + 3 ; break ; case ' ' : pos = pos * 4 + 4 ; break ; } } return pos ; } var n = " " ; document . write ( findpos ( n ) ) ;