Create 0141-linked-list-cycle.rs

Author: neetcode-gh

rust/0141-linked-list-cycle.rs

@@ -0,0 +1,16 @@
+impl Solution {
+    pub fn has_cycle(head: *mut ListNode) -> bool {
+        unsafe {
+            let mut slow = head;
+            let mut fast = head;
+            while !fast.is_null() && !(*fast).next.is_null() {
+                slow = (*slow).next;
+                fast = (*(*fast).next).next;
+                if slow == fast {
+                    return true;
+                }
+            }
+        }
+        false
+    }
+}