代码最好在O(n)时间内运行,并且只使用O(1)内存。 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试。 02 第一种解法 这两个单链表,也可以看做是两数组,找出其中重复元素开始位置的值,最直接的办法就是上两层循环,外层遍历链表A,内层循环遍历链表B,直到遇到...
1publicclassSolution {2publicListNode getIntersectionNode(ListNode headA, ListNode headB) {3if(headA==null||headB==null)returnnull;4intlengthA=0;5intlengthB=0;6ListNode currentA=headA;7ListNode currentB=headB;8while(currentA.next!=null)9{10currentA=currentA.next;11lengthA++;12}13while(curre...
思路 先算出两个链表各自的长度,然后从较长的链表先遍历,遍历到较长链表剩余长度和较短链表一样时,用两个指针同时遍历两个链表。这样如果链表有交点的话,两个指针已经一定会相遇。 代码 public class Solution { public ListNode getIntersectionNode(ListNode headA, ListNode headB) { ListNode nodea = headA, ...
java解法 public class Solution { public ListNode getIntersectionNode(ListNode headA, ListNode headB) { if(headA == null || headB ==null) return null; ListNode tempA = headA; ListNode tempB = headB; while(tempA!=tempB){ if(tempA ==null){ tempA=headB; }else{ tempA=tempA.next;...
160. Intersection of Two Linked Lists Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to intersect at node c1. Example 1: ```Input:intersectVal = 8, listA = [4,1,8,4,5], listB = [...
Explanation: The two lists do not intersect, so return null. 1. 2. 3. 4. Notes: If the two linked lists have no intersection at all, return null. The linked lists must retain their original structure after the function returns.
详见:https://leetcode.com/problems/intersection-of-two-linked-lists/description/ Java实现: 方法一:借助栈 AI检测代码解析 /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { ...
will help us counteract the difference. So if two linkedlist intersects, the meeting point in second iteration must be the intersection point. If the two linked lists have no intersection at all, then the meeting pointer in second iteration must be the tail node of both lists, which is null...
【leetcode】Intersection of Two Linked Lists 2015-03-26 22:10 − #题目简述: Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: A:... mrbean 0 250 java交集retainAll 和 Sets.intersection 性能比...
Find the area of their intersection. Input The first line contains thre... 执||念 0 235 [Algorithm] 160. Intersection of Two Linked Lists 2019-12-19 03:19 − Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following...