solve linked list cycle

Author: sora0319

linked-list-cycle/sora0319.java

@@ -0,0 +1,20 @@
+public class sora0319 {
+    public class Solution {
+        public boolean hasCycle(ListNode head) {
+            ListNode back = head;
+            ListNode front = head;
+
+            while (front != null && front.next != null) {
+                back = back.next;
+                front = front.next.next;
+
+                if (back == front) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}
+