(1..100).collect{ x ->
  switch([x % 3, x % 5]) {
    case {it[0] == 0 && it[1] == 0} : return 'FizzBuzz'
    case {it[0] == 0              } : return 'Fizz'
    case {              it[1] == 0} : return 'Buzz'
    default                         : return x.toString()
  }
}.each{ println it }