这篇文章主要讲解了“Linked List-Easy怎么将两个排序的链表合并”,文中的讲解内容简单清晰,易于学习与理解,下面请大家跟着小编的思路慢慢深入,一起来研究和学习“Linked List-Easy怎么将两个排序的链表合并”吧!
将两个排序的链表合并,返回一个新链表,返回的新链表也是排好序的。
解题思路:
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创建两个链表,一个负责保存头节点,一个负责记录比较后的结果。
Language : c
/** * Definition for singly-linked list. * struct ListNode { * int val; * struct ListNode *next; * }; */struct ListNode* mergeTwoLists(struct ListNode* l1, struct ListNode* l2) {struct ListNode* newlist = (struct ListNode *)malloc(sizeof(struct ListNode));struct ListNode* temp = (struct ListNode *)malloc(sizeof(struct ListNode)); newlist = temp;while(l1 && l2){if(l1->val < l2->val){ temp->next = l1; l1 = l1->next; }else{ temp->next = l2; l2 = l2->next; } temp = temp->next; } temp->next = l1 ? l1 : l2;return newlist->next; }
Language : cpp
/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} * }; */class Solution {public: ListNode* mergeTwoLists(ListNode* l1, ListNode* l2) { ListNode newlist(INT_MIN); ListNode *temp = &newlist;if(l1 == NULL && l2 == NULL){ return NULL; }if(l1 != NULL && l2 == NULL){ return l1; }if(l1 == NULL && l2 != NULL){ return l2; }while(l1 && l2){if(l1->val < l2->val){ temp->next = l1; l1 = l1->next; }else{ temp->next = l2; l2 = l2->next; } temp = temp->next; } temp->next = l1 ? l1 : l2; return newlist.next; } };
Language:python
# Definition for singly-linked list.# class ListNode(object):# def __init__(self, x):# self.val = x# self.next = Noneclass Solution(object):def mergeTwoLists(self, l1, l2):""" :type l1: ListNode :type l2: ListNode :rtype: ListNode """result = cur = ListNode(0)while l1 and l2:if l1.val < l2.val: cur.next = l1 l1 = l1.nextelse: cur.next = l2 l2 = l2.next cur = cur.next cur.next = l1 or l2return result.next
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原创文章,作者:kepupublish,如若转载,请注明出处:https://blog.ytso.com/220253.html