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...
常规的指针分裂法,复制法,偏移法。 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....
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, nodeb...
题解 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....
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 = [...
详见:https://leetcode.com/problems/intersection-of-two-linked-lists/description/ Java实现: 方法一:借助栈 /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { * val = x; ...
Input Explanation: The intersected node's value is 2 (note that this must not be 0 if the two lists intersect). From the head of A, it reads as [0,9,1,2,4]. From the head of B, it reads as [3,2,4]. There are 3 nodes before the intersected node in A; There are 1 no...
1, Get the length of the two lists. 2, Align them to the same start point. 3, Move them together until finding the intersection point, or the end null 代码如下: public ListNode getIntersectionNode(ListNode headA, ListNode headB) { ...
UnionAndIntersectionOfTwoSortedIntervalLists.java ValidDirection.java .gitignore All_Topics_top_leetcode_by_frequency.md EPI_Questions_List.md ImportantLinks.md README.md SECURITY.md Top_LeetCode_Questions_By_Company.md Top_LeetCode_Questions_By_Topic.mdBreadcrumbs FAANG /topUberQuestions/...
简介:爱写Bug(ID:iCodeBugs)编写一个程序,找到两个单链表相交的起始节点。Write a program to find the node at which the intersection of two singly linked lists begins.如下面的两个链表:在节点 c1 开始相交。 爱写Bug(ID:iCodeBugs) 编写一个程序,找到两个单链表相交的起始节点。