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| author | crupest <crupest@outlook.com> | 2021-02-23 21:07:19 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2021-02-23 21:07:19 +0800 |
| commit | d8f3b40085619cb680c8f227c65a1f5acc393223 (patch) | |
| tree | 6a38e3a6c79276fc396259ef962d17236dbed569 /leetcode/cpp/328.cpp | |
| parent | b0162802ad9723c678e495f29ca2f0fc0af2eff1 (diff) | |
| download | solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.tar.gz solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.tar.bz2 solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.zip | |
Move leetcode solutions to subdir.
Diffstat (limited to 'leetcode/cpp/328.cpp')
| -rw-r--r-- | leetcode/cpp/328.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/leetcode/cpp/328.cpp b/leetcode/cpp/328.cpp new file mode 100644 index 0000000..de3ad0b --- /dev/null +++ b/leetcode/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;
+ }
+};
|