DEV3.2 TP'S

DEV/DEV3.2/TP02/Exercise1/Recursion.java

@@ -0,0 +1,27 @@
+public class Recursion {
+    
+    public static void main(String[] args) {
+        if(args.length > 0) {
+            displayFactorial(Integer.parseInt(args[0]));
+            return; 
+        }
+
+        System.out.println("Usage: java Recursion <number>");
+    }
+
+    public static void displayFactorial(int n) {
+        System.out.println(n + "! = " + factorial(n, 0));
+    }
+
+    private static int factorial(int n, int count) {
+        count++;
+        System.out.println("n = " + n + " | count = " + count);
+
+        if(n == 0) {
+            //Thread.dumpStack();
+            return 1; 
+        }
+
+        return n * factorial(n - 1, count);
+    }
+}