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  • python 无序列表 单链表

    class Node():
        def __init__(self,Data):
            self.data = Data  # 当前节点
            self.next = None  # 下一节点,为None表示没有下一个节点
        
        def getData(self):
            return self.data
        
        def getNext(self):
            return self.next
        
        def setData(self,newData):
            self.data = newData
    
        def setNext(self,newNext):
            self.next = newNext
    
    class UnorderedList():
        def __init__(self):
            self.head = None
        
        def isEmpty(self):
            return self.head == None
            
        def add(self,item):
            temp = Node(item)         # 创建一个节点
            temp.setNext(self.head)   # 将当前的头节点变成新创建的节点的下一个节点:即往后移动一位
            self.head = temp          # 再将新创建的节点设成头
        
        def size(self):
            current = self.head
            count = 0
            while current != None:
                count += 1
                current = current.getNext()
            return count
            
        def search(self,item):
            current = self.head
            while current != None:
                if current.getData() == item:
                    return True
                else:
                    current = current.getNext()
            return False
        
        def remove(self,item):
            if self.search(item) == True:
                current = self.head
                previous = None
                found = False
                while not found:
                    if current.getData() == item:
                        found = True
                    else:
                        previous = current
                        current = current.getNext()
                if previous == None:
                    self.head = current.getNext()
                else:
                    previous.setNext(current.getNext())
            else:
                print('No item found')
                
    
    
    li = UnorderedList()
    li.add(5)
    li.add(6)
    li.add(7)
    print(li.size())
    print(li.search(6))
    li.remove(6)
    print(li.search(5))
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  • 原文地址:https://www.cnblogs.com/wztshine/p/12905524.html
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