list := List clone
 
while (list count() < 6,
    n := Number random(1, 50) floor
    if( (list contains( n ) ) == Nil, //true if list doesn't contain n
        list add( n )
    )
)
 
Became:
 
l := List clone
 
while (l size < 6,
    n := Random value(1 50) floor round
    l appendIfAbsent( n )
)
 
l sort print