s0024
This commit is contained in:
parent
8d4732c963
commit
da63dcb16b
17
include/s0024_swap_nodes_in_pairs.hpp
Normal file
17
include/s0024_swap_nodes_in_pairs.hpp
Normal file
@ -0,0 +1,17 @@
|
|||||||
|
#ifndef S0024_SWAP_NODES_IN_PAIRS
|
||||||
|
#define S0024_SWAP_NODES_IN_PAIRS
|
||||||
|
|
||||||
|
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) {}
|
||||||
|
};
|
||||||
|
|
||||||
|
class Solution {
|
||||||
|
public:
|
||||||
|
ListNode* swapPairs(ListNode* head);
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif
|
11
src/s0024_swap_nodes_in_pairs.cpp
Normal file
11
src/s0024_swap_nodes_in_pairs.cpp
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
#include "s0024_swap_nodes_in_pairs.hpp"
|
||||||
|
|
||||||
|
ListNode* swapPairs(ListNode* head) {
|
||||||
|
if (head == nullptr || head->next == nullptr) {
|
||||||
|
return head;
|
||||||
|
}
|
||||||
|
ListNode *newHead = head->next;
|
||||||
|
head->next = swapPairs(newHead->next);
|
||||||
|
newHead->next = head;
|
||||||
|
return newHead;
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user