Time: 186 ms (19.55%), Space: 38.7 MB (88.49%) - LeetHub

Author: cmcoffeedev

0141-linked-list-cycle/0141-linked-list-cycle-04-23-2025-15-12-08.kt

@@ -0,0 +1,22 @@
+/**
+ * Example:
+ * var li = ListNode(5)
+ * var v = li.`val`
+ * Definition for singly-linked list.
+ * class ListNode(var `val`: Int) {
+ *     var next: ListNode? = null
+ * }
+ */
+
+class Solution {
+    fun hasCycle(head: ListNode?): Boolean {
+        var slow = head
+        var fast = head?.next
+        while(fast != null && fast?.next != null){
+            if(slow == fast) return true
+            slow = slow?.next
+            fast = fast?.next?.next
+        }
+        return false
+    }
+}