Java | Leetcode Java题解之第138题随机链表的复制
标题：https://img-blog.csdnimg.cn/direct/c34fca02b0124f8f862dd852163b6982.png
题解：
class Solution {
public Node copyRandomList(Node head) {
if (head == null) {
return null;
}
for (Node node = head; node != null; node = node.next.next) {
Node nodeNew = new Node(node.val);
nodeNew.next = node.next;
node.next = nodeNew;
}
for (Node node = head; node != null; node = node.next.next) {
Node nodeNew = node.next;
nodeNew.random = (node.random != null) ? node.random.next : null;
}
Node headNew = head.next;
for (Node node = head; node != null; node = node.next) {
Node nodeNew = node.next;
node.next = node.next.next;
nodeNew.next = (nodeNew.next != null) ? nodeNew.next.next : null;
}
return headNew;
}
}
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