Function to encrypt the let
function encryption ( s ) { let l = s . length ; let b = Math . ceil ( Math . sqrt ( l ) ) ; let a = Math . floor ( Math . sqrt ( l ) ) ; let encrypted = ' ' ; if ( b * a < l ) { if ( Math . min ( b , a ) == b ) { b = b + 1 ; } else { a = a + 1 ; } }