/*
 * Copyright (C) 2016 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.
 */

import java.util.function.Consumer;
class Transform {
  public void sayHi(int recur, Consumer<String> reporter, Runnable r) {
    privateSayHi(recur, reporter, r);
  }

  private void privateSayHi(int recur, Consumer<String> reporter, Runnable r) {
    reporter.accept("hello" + recur);
    if (recur == 1) {
      r.run();
      privateSayHi(recur - 1, reporter, r);
    } else if (recur != 0) {
      privateSayHi(recur - 1, reporter, r);
    }
    reporter.accept("goodbye" + recur);
  }
}