From d9dd2d8bdfd6eccf1ce5c096f20ef1ddfdb102eb Mon Sep 17 00:00:00 2001
From: Dale Seo <dale.seo@gmail.com>
Date: Mon, 17 Nov 2025 14:56:40 -0500
Subject: [PATCH 1/2] ci: remove merge group trigger from integration workflow

---
 .github/workflows/integration.yaml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/.github/workflows/integration.yaml b/.github/workflows/integration.yaml
index a7cff2614..440ed01a5 100644
--- a/.github/workflows/integration.yaml
+++ b/.github/workflows/integration.yaml
@@ -2,12 +2,10 @@ name: Integration 🔄
 
 on:
   pull_request:
-  merge_group:
 
 jobs:
   linelint:
     runs-on: ubuntu-latest
-    if: github.event_name == 'pull_request'
     steps:
       - uses: actions/checkout@v4
         with:

From 5d3bf6aa8430e41f369d652d633e7662f1a6657d Mon Sep 17 00:00:00 2001
From: Dale Seo <dale.seo@gmail.com>
Date: Wed, 19 Nov 2025 20:36:44 -0500
Subject: [PATCH 2/2] linked-list-cycle

---
 linked-list-cycle/DaleSeo.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 linked-list-cycle/DaleSeo.rs

diff --git a/linked-list-cycle/DaleSeo.rs b/linked-list-cycle/DaleSeo.rs
new file mode 100644
index 000000000..bd88e1f4b
--- /dev/null
+++ b/linked-list-cycle/DaleSeo.rs
@@ -0,0 +1,28 @@
+// Definition for singly-linked list.
+#[derive(PartialEq, Eq, Clone, Debug)]
+pub struct ListNode {
+    pub val: i32,
+    pub next: Option<Box<ListNode>>,
+}
+
+// TC: O(n)
+// SC: O(1)
+impl Solution {
+    pub fn has_cycle(head: Option<Box<ListNode>>) -> bool {
+        let mut slow = &head;
+        let mut fast = &head;
+
+        while fast.is_some() && fast.as_ref().unwrap().next.is_some() {
+            slow = &slow.as_ref().unwrap().next;
+            fast = &fast.as_ref().unwrap().next.as_ref().unwrap().next;
+
+            if slow.as_ref().map(|node| node.as_ref() as *const _)
+                == fast.as_ref().map(|node| node.as_ref() as *const _)
+            {
+                return true;
+            }
+        }
+
+        false
+    }
+}