Java List Max maxIndex(List list)

Here you can find the source of maxIndex(List list)

Description

Returns the index of the maximum element in the list, using the elements' natural ordering, or -1 if the list is empty.

License

Open Source License

Parameter

Parameter Description
list a list

Return

the index of the maximum element

Declaration

public static <T extends Comparable<? super T>> int maxIndex(List<T> list) 

Method Source Code


//package com.java2s;
/*//from  w  w w. ja  v a 2  s  .c  o  m
 * Copyright (c) 2013-2014 Massachusetts Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.util.List;

public class Main {
    /**
     * Returns the index of the maximum element in the list, using the elements'
     * natural ordering, or -1 if the list is empty.
     * @param list a list
     * @return the index of the maximum element
     */
    public static <T extends Comparable<? super T>> int maxIndex(List<T> list) {
        if (list.isEmpty())
            return -1;
        if (list.size() == 1)
            return 0;
        int best = 0;
        //TODO: alternative implementation for non-RandomAccess lists?
        for (int i = 1; i < list.size(); ++i)
            if (list.get(i).compareTo(list.get(best)) > 0)
                best = i;
        return best;
    }
}

Related

  1. max(List numbers)
  2. max(List objectList)
  3. max(List arg)
  4. maxAbsVal(List vals)
  5. maxIndex( List list)
  6. maxInnerSize(List> listOfLists)
  7. maxInt(List array)
  8. maxLength(List patterns)
  9. maxLength(List list)