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: A:          a1 → a2                   ↘                     c1 → c2 → c3      …

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: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. Notes: If the two linked lists have…

原题链接在这里:https://leetcode.com/problems/intersection-of-two-linked-lists/ 思路:1. 找到距离各自tail 相同距离的起始ListNode,可以通过两个pointer,长的那个先移动Math.abs(lenA-lenB). 2. 两个pointer各自移动直到找到相同的ListNode. Node:1. 若有intersection,最后的点必须相同,若最后的点不同,则没有intersection. 2. 不用比较node.v…

Description: 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: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. 求两个链表的相交的部分 /** * Defin…

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: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. Notes: If the two linked lists have…

题意: 给两个链表,他们的后部分可能有公共点.请返回第一个公共节点的地址?若不重叠就返回null. 思路: 用时间O(n)和空间O(1)的做法.此题数据弱有些弱. 方法(1)假设两个链表A和B,用两个指针分别按顺序遍历AB和BA,这AB和BA肯定等长的.如果他们有公共点,那么按照这样走必定会在某个点相遇.所以只要预先判断是否有公共点,这只需要用两个指针分别指向A和B的链尾判断是否相同即可(这一步可以使用更简单的方法,增加1个计数器,判断指针1是否已经遍历过AB了). /** * Definiti…

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: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. Notes: If the two linked lists have…

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: A: a1 → a2 ↘ c1 → c2 → c3 ↗ B: b1 → b2 → b3 begin to intersect at node c1. Not…

Write a program to find the node at which the intersection of two singly linked lists begins. Notice If the two linked lists have no intersection at all, return null. The linked lists must retain their original structure after the function returns. Y…

Intersection of Two Linked Lists 本题收获: 1.链表的输入输出 2.交叉链表:这个链表可以有交叉点,只要前一个节点的的->next相同即可. 题目: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 l…