Listing polygon names that another polygon intersects

Leahr

Hello! I am currently writing an expression to list all of the cities (or just a single city) that a park area is in. I was able to get a loop to find and list all of the cities/city returned, just formatting it is my last issue. 

Currently what is returned is:

or 

which depends on how many cities the park is in. (here is the expression)

Ideally, I would want the list to look more like

"This park is in: City1, City2, and City3"

or "This park is in: City1 and City2"

or "This park is in: City1"

(obviously, it would depend on the number of cities the park is in)

Does anyone have a solution to adding commas between city names, while not having a comma after the last city, but having an and before the last one (if possible)?

 

Thanks!

JohannesLindner

Here's another way:

var cityList = []
for(var c in inCity) {
    Push(cityList, c.CTU_NAME)
}
if(Count(cityList) > 1) {
    cityList[-1] = "and " + cityList[-1]
}
var cityString = Concatenate(cityList, ", ")
cityString = Replace(cityString, ", and", " and")
return "This park is in: " + cityString