#20: add solution for exercise #141 in rust

rust/linked-lists/0141-linked-list-cycle.rs

@@ -0,0 +1,15 @@
+from structures import ListNode
+
+def hasCycle(head: ListNode) -> bool:
+    fast = head
+    slow = head
+
+    if head:
+        while fast.next and fast.next.next:
+            fast = fast.next.next
+            slow = slow.next
+
+            if fast == slow:
+                return True
+
+    return False