content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  class Main {
  
  /*
      // Iterative version
      static int fibonacci(int n) {
          if (n == 0) {
              return 0;
          }
          int x = 1;
          int y = 1;
          for (int i = 3; i <= n; i++) {
              int z = x + y;
              x = y;
              y = z;
          }
          return y;
      }
  */
  
     // Recursive version
     static int fibonacci(int n) {
          if ((n == 0) || (n == 1)) {
              return n;
          } else {
              return fibonacci(n - 1) + (fibonacci(n - 2));
          }
      }
  
      public static void main(String[] args) {
          String arg = (args.length > 1) ? args[1] : "10";
          try {
              int x = Integer.parseInt(arg);
              int y = fibonacci(x);
              System.out.printf("fibonacci(%d)=%d\n", x, y);
              y = fibonacci(x + 1);
              System.out.printf("fibonacci(%d)=%d\n", x + 1, y);
          } catch (NumberFormatException ex) {
              System.err.println(ex);
              System.exit(1);
          }
      }
  }
  