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Swap Nodes in Pairs #47

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Tracked by #100
fkdl0048 opened this issue Oct 4, 2024 · 0 comments
Closed
Tracked by #100

Swap Nodes in Pairs #47

fkdl0048 opened this issue Oct 4, 2024 · 0 comments
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fkdl0048 commented Oct 4, 2024

/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode() : val(0), next(nullptr) {}
 *     ListNode(int x) : val(x), next(nullptr) {}
 *     ListNode(int x, ListNode *next) : val(x), next(next) {}
 * };
 */

 // 해당 리스트의 짝수까지 개수가 있다면
 // 스왑함수로 보내서 스왑을 요청함
class Solution {
public:
    ListNode* swapPairs(ListNode* head) {
        ListNode* dummy = new ListNode(0);
        dummy->next = head;
        ListNode* current = dummy;

        while(current->next != nullptr && current->next->next != nullptr){
            ListNode* first = current->next;
            ListNode* second = current->next->next;

            first->next = second->next;
            second->next = first;
            current->next = second;

            current = first;
        }

        return dummy->next;
    }        
};
  • 연결리스트 뒤집기 문제..
@fkdl0048 fkdl0048 mentioned this issue Oct 4, 2024
7 tasks
@fkdl0048 fkdl0048 self-assigned this Oct 4, 2024
@fkdl0048 fkdl0048 added this to Todo Oct 4, 2024
@github-project-automation github-project-automation bot moved this to Todo in Todo Oct 4, 2024
@fkdl0048 fkdl0048 closed this as completed Oct 4, 2024
@github-project-automation github-project-automation bot moved this from Todo to Done in Todo Oct 4, 2024
@fkdl0048 fkdl0048 added this to the LeetCode milestone Oct 4, 2024
@fkdl0048 fkdl0048 mentioned this issue Oct 15, 2024
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