content: /**
   * Copyright (C) 2007 The Guava Authors
   *
   * 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.
   */
  package com.fernandocejas.arrow.collections;
  
  import java.util.AbstractList;
  import java.util.List;
  
  import static com.fernandocejas.arrow.checks.Preconditions.checkElementIndex;
  
  class Partition<T> extends AbstractList<List<T>> {
    final List<T> list;
    final int size;
  
    Partition(List<T> list, int size) {
      this.list = list;
      this.size = size;
    }
  
    @Override
    public List<T> get(int index) {
      checkElementIndex(index, size());
      int start = index * size;
      int end = Math.min(start + size, list.size());
      return list.subList(start, end);
    }
  
    @Override
    public int size() {
      int div = list.size() / size;
      int rem = list.size() % size;
      if (rem == 0) {
        return div;
      } else {
        return div + 1;
      }
    }
  
    @Override
    public boolean isEmpty() {
      return list.isEmpty();
    }
  }
  