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在單鏈表上插入方法,這行得通嗎?

[英]insert method on singly linked list, does this work?

我對正在使用的insert方法感到更擔心,它是一個最多包含10個節點的單鏈接列表。 我有一個SinglyLinkedList ,它具有返回分數的getScore()方法。 我伴隨了相關方法來查看流程。 基本上,我想完成的事情以及我對insert方法所做的事情都將節點(具有分數)插入到正確的排序位置,從左開始是最高得分,最右邊是最低得分。 如果我有[100]--[80]--[65]並且得分為67的另一個節點出現,則只要大小為[100]--[80]--[67]--[65]小於10, if (size == 10)則表示列表已滿,進入的任何其他節點將僅將其與最后一個節點進行比較,例如,新節點95大於65則僅與65比較。那么這意味着它95必須位於列表中的某個位置,刪除最后一個節點“ 65”,然后遍歷以找到適合95的正確位置。如果另一個節點(例如高於100)(例如200),那么它將只要size < 10則為[200]--[100]--[95]--[80]--[67] ,否則踢最低分,因此列表仍將保留10個節點。 你明白了。

public void insert(Node n) { 
  //insert if node's score is higher than the last node
  int currScore = n.getScore();
  Node pos = head;

  if(pos.getScore() < currScore) {
    addFirst(n);
  }

  if(pos != null) {
    if(getSize() == 10) {
      if(tail.getScore() < currScore) {
        removeLast();
      } else { 
        n = null;
      }
    } else {
      while(getSize() < 10) {
        if((pos.getNext() != null) && (pos.getNext().getScore() > currScore))
          pos.setNext(pos);
      }
      insertAfter(n,pos);
    }
  }
}

public void addFirst(Node v) {
  if(head == null) {
    head = v;
    tail = v;
    size++;
}

public void insertAfter(Node p, Node v) { //insert v after p
  Node t = p.getNext();
  p.setNext(v);
  v.setNext(t);
  size++;
}

public void removeLast() {
  if(head == null) {
    return;
  }
  Node pos = head;
  if(pos.getNext() == null) {
    pos = null;
  }
  Node curr = head.getNext();
  while(curr.getNext() != null) {
    pos = curr;
    curr.setNext(curr);

    if(curr.getNext() == null) {
      curr = null;
    }
  }         
}

public class Node  {
    private String name;
    private int score;
    private Node next;

    public Node() {
        name = "";
        score = 0;
        next = null;
    }

public Node(String name, int score, Node next) {
    this.name = name;
    this.score = score;
    this.next = next;
}
public String getName() {
    return name;
}

public int getScore() {
        return score;
}

public Node getNext() {
        return next;
}
public void setName(String name) {
        this.name = name;
}

public void setScore(int score) {
        this.score = score;
}

public void setNext(Node next) {
    this.next = next;
}
}

public class SinglyLinkedList {
    public Node head;
    public Node tail;
    public int size;
    static final int MAXSIZE = 10;

public SinglyLinkedList() {
    head = null;
    tail = null;
    size = 0;
}
public void addFirst(Node v) {
    if(head == null) {
    head = v;
    tail = v;
    size++;
    }
}
public void addLast(Node v) {
    v.setNext(null);
    tail.setNext(v);
    tail = v;
    size++;
}
public void insertAfter(Node p, Node v) { //insert v after p
    Node t = p.getNext();
    p.setNext(v);
    v.setNext(t);
    size++;
}
public void removeFirst() {
   if(head == null) {
       return;
   }
   Node t = head;
   head.setNext(head);
   t = null;
   size--;
}
public void removeLast() {
    if(head == null) {
        return;
    }
    Node pos = head;
    if(pos.getNext() == null) {
        pos = null;
    }
    Node curr = head.getNext();
    while(curr.getNext() != null) {
        pos = curr;
        curr.setNext(curr);

        if(curr.getNext() == null) {
            curr = null;
        }
    }         
}

public void insert(Node n) { //insert if node's score is higher than the last node
    int currScore = n.getScore();
    Node pos = head;

    if(pos.getScore() < currScore) {
            addFirst(n);
     }

    if(pos != null) {
        if(getSize() == 10) {
            if(tail.getScore() < currScore) {
                removeLast();
            } else { 
                n = null;
            }
        } else {
            while(getSize() <= 10) {
                if(pos.getNext() != null && pos.getNext().getScore() > currScore)
                pos.setNext(pos);
            }
            insertAfter(n,pos);
        }
    }
}
public int getSize() {
    return size;
}
}

您的setNext()方法在哪里? 您要在setNext()中增加大小嗎? ..我認為您的程序將陷入無限循環,因為-

 while(getSize() < 10) {
                if(pos.getNext() != null && pos.getNext().getScore() > currScore)
                pos.setNext(pos);
            }

你在哪里做size ++?

給出您正在使用的所有方法的實現...

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