1
我已经写以下程序从链表中移除重复的,夫特链表删除重复
下面是包含节点类和方法通过遍历链接列表来删除重复的代码。
在方法removeDuplicates
,但是当我表演失败而(cur != nil)
检查,当改为cur.link != nil
工作,但输出是不正确的。
import UIKit
class LinkedList {
class Node {
var data:Int
var link: Node?
init(data: Int = 0){
self.data = data
self.link = nil
}
}
func disp(n: Node?) -> String{
var text = String()
var node = n
while node != nil{
text += "\(node!.data)"
node = node?.link
if node != nil {
text += "--->"
}
}
return text
}
func removeDuplicatesNode(head : Node?) -> Node?{
var cur = head
var prev:Node? = nil
let s = NSMutableSet()
while (cur != nil) {
let val:Int = cur!.data
if(s.contains(val)){
prev?.link = cur?.link!
}else{
s.add(val)
prev = cur
}
print(cur)
cur = cur?.link
}
return head!
}
}
var list = LinkedList()
var removeDuplicates = LinkedList.Node(data: 1)
removeDuplicates.link = LinkedList.Node(data: 2)
removeDuplicates.link?.link = LinkedList.Node(data: 3)
removeDuplicates.link?.link?.link = LinkedList.Node(data: 3)
print("Remove Duplicates " + list.disp(n: (list.removeDuplicatesNode(head: removeDuplicates))))
该工程..非常感谢你.. – Badrinath