Create tutorial_51.java

simply-coded · web-flow · commit 5a23b8d09f69 · 2017-04-22T16:13:40.000-05:00
diff --git a/code/tutorial_51.java b/code/tutorial_51.java
@@ -0,0 +1,34 @@
+class Driver {
+
+    public static void main(String[] args) {
+      
+        System.out.println( factorial(4) );
+        looper(0);
+        looper(5,20,2);
+        
+    }
+
+    static void looper(int i) {
+        System.out.println(i);
+        i++;
+        if (i < 10) {
+            looper(i);
+        }
+    }
+
+    static void looper(int start, int end, int step) {
+        System.out.println(start);
+        start += step;
+        if (start < end) {
+            looper(start, end, step);
+        }
+    }
+
+    static int factorial(int n) {
+        if (n == 0) {
+            return 1;            
+        }
+        return n * factorial(n - 1);
+    }
+    
+}
