在for循環中創建並鏈接LinkedList

Question

我試圖創建一個新的LinkedListNode對象，因爲我反過來解析了char[]。然後我想這些

char[] totalnum = (total + "").toCharArray(); 
    for (int i = totalnum.length; i > 0; i--) { 
     LinkedListNode sum = new LinkedListNode(totalnum[i]); 
     sum.next = null; 
    } 

鏈接在這裏是我的LinkedListNode類：

public class LinkedListNode { 
    int data; 
    public LinkedListNode next; 

    // constructor 
    public LinkedListNode(int newData) { 
     this.next = null; 
     this.data = newData; 
    } 
} 

我想知道我怎麼能去這樣做。我是Java新手，所以這讓我很難過！我知道我應該在每次迭代中創建一個新的LinkedListNode對象，但這是我得到的

Answer 1

public class LinkedListNode { 
    int data; 
    private LinkedListNode next; 

    public LinkedListNode(int data) { 
     this.data = data; 
    } 

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

    public LinkedListNode getNext() { 
     return next; 
    } 
} 

char[] totalNum = (total + "").toCharArray(); 
int length = totalNum.length; 

LinkedListNode tail /*or 'head', whatever suits you*/ = new LinkedListNode(totalNum[length - 1]); 
LinkedListNode newNode; 
LinkedListNode previousNode = tail; 

for (int i = length - 2; i >= 0; i--) { 
    newNode = new LinkedListNode(totalNum[i]); 
    previousNode.setNext(newNode); 
    previousNode = newNode; 
}