content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  package accord.utils;
  
  import java.util.AbstractList;
  
  public class WrapAroundList<T> extends AbstractList<T>
  {
      final T[] contents;
      final int start, end, size;
  
      public WrapAroundList(T[] contents, int start, int end)
      {
          this.contents = contents;
          this.start = start;
          this.end = end;
          this.size = end > start ? end - start : end + (contents.length - start);
      }
  
  
      @Override
      public T get(int index)
      {
          int i = start + index;
          if (i >= contents.length) i -= contents.length;
          return contents[i];
      }
  
      @Override
      public int size()
      {
          return size;
      }
  }