数组里面按照字母排序
let animals = ["fish","cat","chicken","dog"]
letsortedStrings = animals.sort(isBefore)
print(sortedStrings)
funcisBefore(first:String,two:String)->Bool{
return first>two
}
数组里面按照字母排序
let animals = ["fish","cat","chicken","dog"]
letsortedStrings = animals.sort(isBefore)
print(sortedStrings)
funcisBefore(first:String,two:String)->Bool{
return first>two
}