content: /*
   * Copyright (c) 1997 - 2022
   * Idorsia Pharmaceuticals Ltd.
   * Hegenheimermattweg 91
   * CH-4123 Allschwil, Switzerland
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   * 3. Neither the name of the copyright holder nor the
   *    names of its contributors may be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * @author Modest v. Korff
   */
  
  package com.actelion.research.util.datamodel;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * ModelXYIndexHelper
   * <p>Modest v. Korff</p>
   * <p>
   * Created by korffmo1 on 08.11.19.
   */
  public class ModelXYIndexHelper {
  
      /**
       * Sorts the data for the first column in Y and splits them.
       * @param m
       * @param fractionFirst
       * @return
       */
      public static ModelXYIndex [] splitLowHighY(ModelXYIndex m, double fractionFirst){
  
          List<XY> li = m.getAsList();
  
          Collections.sort(li, XY.getComparatorY(0));
  
          int nFirst = (int)(li.size() * fractionFirst);
  
          List<XY> liFirst = new ArrayList<>();
          for (int i = 0; i < nFirst; i++) {
              liFirst.add(li.get(i));
          }
  
          List<XY> liSec = new ArrayList<>();
          for (int i = nFirst; i < li.size(); i++) {
              liSec.add(li.get(i));
          }
  
          ModelXYIndex XYFirst = new ModelXYIndex(new ModelXY(liFirst));
          ModelXYIndex XYSecond = new ModelXYIndex(new ModelXY(liSec));
  
          ModelXYIndex [] arr = {XYFirst, XYSecond};
  
          return arr;
      }
  
      public static ModelXYIndex [] splitShuffled(ModelXYIndex m, double fractionFirst){
  
          List<XY> li = m.getAsList();
  
          Collections.shuffle(li);
  
          int nFirst = (int)(li.size() * fractionFirst);
  
          List<XY> liFirst = new ArrayList<>();
          for (int i = 0; i < nFirst; i++) {
              liFirst.add(li.get(i));
          }
  
          List<XY> liSec = new ArrayList<>();
          for (int i = nFirst; i < li.size(); i++) {
              liSec.add(li.get(i));
          }
  
          ModelXYIndex XYFirst = new ModelXYIndex(new ModelXY(liFirst));
          ModelXYIndex XYSecond = new ModelXYIndex(new ModelXY(liSec));
  
          ModelXYIndex [] arr = {XYFirst, XYSecond};
  
          return arr;
      }
  
  }
  