方法不會替換列表中的最后一個元素

Question

我有一種方法來替換鏈表中的元素。 它工作正常，但我注意到列表中的最后一個元素沒有被替換。 我想知道我哪里錯了？

public class ListOfNVersion03PartB
{   
    private int thisNumber;              // the number stored in this node
    private ListOfNVersion03PartB next;  // forms a linked list of objects

    private final int nodeID;            // a unique ID for each object in the list

    private static int nodeCount = 0;    // the number of list objects that have been created

    public ListOfNVersion03PartB(int num)
    {
        thisNumber = num;
        next = null;

        ++nodeCount;
        nodeID = nodeCount;

    } 

public int replaceOnce(int replaceThis, int withThis)
    {        
       int count = 0;

        if(   (next!= null) && (thisNumber == replaceThis)   ){
            thisNumber= withThis;
            return count =1;
        }        
        if(   (next!= null) && (thisNumber != replaceThis)   ){
            return next.replaceOnce(replaceThis,withThis);
        }

        else
            return count;

    }

Answer 1

嘗試遍歷節點並與該值進行比較，如果找到具有replaceThis值的節點則替換

    public int replaceOnce(int replaceThis, int withThis) {
        ListOfNVersion03PartB current = this;
        int count = 0;
        while (current != null) {
            if (current.thisNumber == replaceThis) {
                current.thisNumber = withThis;
                count++;
            }
            current = current.next;
        }
        return count;
    }