桶排序-Swift
import Foundation
let b:Array = [5,2,3,1,8]
var a:NSMutableArray = []
for var i in 0 ..< 11 {
a[i] = 0
}
for var num in b {
var index = NSInteger(num)
if(a[index] as! NSInteger >= 0){
a[index] = a[index] as! (NSInteger) + 1;
} else {
a[index] = 0
}
}
for var i in 0 ..< a.count {
if(a[i] as! NSInteger > 0){
print(i)
}
}