From 10ca05356678365201543e20defbff73ec6016bb Mon Sep 17 00:00:00 2001
From: Jinyoung Jeong <80400463+jyoung2419@users.noreply.github.com>
Date: Mon, 19 Oct 2026 22:34:34 +0900
Subject: [PATCH] Create 141. Linked List Cycle

---
 .../141. Linked List Cycle"                   | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 "leetcode3/\354\240\225\354\247\204\354\230\201/141. Linked List Cycle"

diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/141. Linked List Cycle" "b/leetcode3/\354\240\225\354\247\204\354\230\201/141. Linked List Cycle"
new file mode 100644
index 00000000..6071c134
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/141. Linked List Cycle"	
@@ -0,0 +1,26 @@
+/**
+ * Definition for singly-linked list.
+ * function ListNode(val) {
+ *     this.val = val;
+ *     this.next = null;
+ * }
+ */
+
+/**
+ * @param {ListNode} head
+ * @return {boolean}
+ */
+var hasCycle = function(head) {
+    let curr = head;
+    let visited = new Set();
+
+    while (curr !== null){
+        if (visited.has(curr)){
+            return true;
+        }
+        visited.add(curr);
+        curr = curr.next;
+    }
+
+    return false;
+};