print mult table 1 to 12 as a square

mul12.scala

    // print mult table 1 to 12 as a square  
    for( a <- (1 to 12); b <- (1 to 12)){
      print("%4s".format(a*b))
      if (b == 12) println("")
    }
    println("")
    
    // is sugar for  
    (1 to 12).foreach( a => (1 to 12).foreach( b => {
      print("%4s".format(a*b)) 
      if(b == 12) println("") 
    }))
    println("")
    
    
    // this should be as fast as a java equivelent 
    var a = 1; var b = 1;
    while(a <= 12){
       b = 1 
       while(b <= 12){
          print("%4s".format(a*b)) 
          if(b == 12) println("") 
          b += 1
       }
       a += 1
    }
    println("")