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| author | crupest <crupest@outlook.com> | 2020-08-05 16:49:09 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2020-08-05 16:49:09 +0800 |
| commit | 4ff96415b04bff718047671bcd48ed4c7c0126b0 (patch) | |
| tree | a25713350e26ad54c9e8d9bb7491620f593f9704 | |
| parent | 7522c4d912a4ef16b8ecb4a3d1854d3a4e31e640 (diff) | |
| download | crupest-4ff96415b04bff718047671bcd48ed4c7c0126b0.tar.gz crupest-4ff96415b04bff718047671bcd48ed4c7c0126b0.tar.bz2 crupest-4ff96415b04bff718047671bcd48ed4c7c0126b0.zip | |
import(solutions): Add problem 328.
| -rw-r--r-- | works/solutions/cpp/328.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/works/solutions/cpp/328.cpp b/works/solutions/cpp/328.cpp new file mode 100644 index 0000000..de3ad0b --- /dev/null +++ b/works/solutions/cpp/328.cpp @@ -0,0 +1,51 @@ +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 *oddEvenList(ListNode *head)
+ {
+ if (head == nullptr)
+ return nullptr;
+
+ if (head->next == nullptr)
+ return head;
+
+ ListNode *odd_head = head;
+ head = head->next;
+ ListNode *even_head = head;
+ head = head->next;
+
+ ListNode *odd_current = odd_head;
+ ListNode *even_current = even_head;
+
+ bool odd = true;
+ while (head != nullptr)
+ {
+ if (odd)
+ {
+ odd_current->next = head;
+ odd_current = head;
+ }
+ else
+ {
+ even_current->next = head;
+ even_current = head;
+ }
+ head = head->next;
+ odd = !odd;
+ }
+
+ odd_current->next = even_head;
+ even_current->next = nullptr;
+
+ return odd_head;
+ }
+};
|