task_1

lr9/task_1/e5.java

@@ -0,0 +1,32 @@
+import java.util.Scanner;
+
+class Main {
+    public static void main(String[] args) {
+        int result = fact(5);
+        System.out.println("Результат: " + result);
+    }
+
+    public static int fact(int n) {
+
+        System.out.println("Вход в fact(" + n + ")");
+
+        if (n == 0) {
+            System.out.println("fact(0) -> 0");
+            return 0;
+        } 
+        else if (n == 1) {
+            System.out.println("fact(1) -> 1");
+            return 1;
+        } 
+        else {
+            int a = fact(n - 2);
+            int b = fact(n - 1);
+
+            int result = a + b;
+
+            System.out.println("fact(" + n + ") = fact(" + (n-2) + ") + fact(" + (n-1) + ") = " + result);
+
+            return result;
+        }
+    }
+}