标签:复杂 image png 特殊 否则 一个 font class lis
解题思路
package jianzhioffer.linkedlist;
import com.sun.org.apache.xalan.internal.xsltc.dom.ClonedNodeListIterator;
/**
* @author hadoop
*/
/*
*解题思路:
*1、遍历链表,复制每个结点,如复制结点A得到A1,将结点A1插到结点A后面;
*2、重新遍历链表,复制老结点的随机指针给新结点,如A1.random = A.random.next;
*3、拆分链表,将链表拆分为原链表和复制后的链表
*/
public class Clone {
public RandomListNode Clone(RandomListNode pHead) {
if(pHead == null) {
return null;
}
RandomListNode currentNode = pHead;
//1、复制每个结点,如复制结点A得到A1,将结点A1插到结点A后面;
while(currentNode != null){
RandomListNode cloneNode = new RandomListNode(currentNode.label);
RandomListNode nextNode = currentNode.next;
currentNode.next = cloneNode;
cloneNode.next = nextNode;
currentNode = nextNode;
}
currentNode = pHead;
//2、重新遍历链表,复制老结点的随机指针给新结点,如A1.random = A.random.next;
while(currentNode != null) {
currentNode.next.random = currentNode.random==null?null:currentNode.random.next;
currentNode = currentNode.next.next;
}
//3、拆分链表,将链表拆分为原链表和复制后的链表
currentNode = pHead;
RandomListNode pCloneHead = pHead.next;
while(currentNode != null) {
RandomListNode cloneNode = currentNode.next;
currentNode.next = cloneNode.next;
cloneNode.next = cloneNode.next==null?null:cloneNode.next.next;
currentNode = currentNode.next;
}
return pCloneHead;
}
class RandomListNode {
int label;
RandomListNode next = null;
RandomListNode random = null;
RandomListNode(int label) {
this.label = label;
}
}
}
标签:复杂 image png 特殊 否则 一个 font class lis
原文地址:https://www.cnblogs.com/Transkai/p/10969730.html