Returns the number of elements shared between the two arrays containing sets. Return the number of elements shared by two column index arrays. - Java Collection Framework

Java examples for Collection Framework:Array Contain

  1. HOME
  2. Java
  3. Collection Framework
  4. Array Contain

Description

Returns the number of elements shared between the two arrays containing sets. Return the number of elements shared by two column index arrays.

Demo Code

/* Copyright (c) 2001-2010, The HSQL Development Group
 * All rights reserved.//  w  w w  . j  av  a  2 s  .c  o m
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 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.
 *
 * Neither the name of the HSQL Development Group 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * 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.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int[] arra = new int[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        int[] arrb = new int[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        System.out.println(countCommonElements(arra, arrb));
    }

    /**
     * Returns the number of elements shared between the two arrays containing
     * sets.<p>
     *
     * Return the number of elements shared by two column index arrays.
     * This method assumes that each of these arrays contains a set (each
     * element index is listed only once in each index array). Otherwise the
     * returned number will NOT represent the number of unique column indexes
     * shared by both index array.
     *
     * @param arra int[]; first array of column indexes.
     *
     * @param arrb int[]; second array of column indexes
     *
     * @return int; number of elements shared by <code>a</code> and <code>b</code>
     */
    public static int countCommonElements(int[] arra, int[] arrb) {

        int k = 0;

        for (int i = 0; i < arra.length; i++) {
            for (int j = 0; j < arrb.length; j++) {
                if (arra[i] == arrb[j]) {
                    k++;
                }
            }
        }

        return k;
    }
}

Related Tutorials