Java Collection Intersect intersects(Collection c0, Collection c1)

Description

Returns whether two collections have any elements in common.

License

Apache License

Declaration

public static <E> boolean intersects(Collection<E> c0, Collection<E> c1) 

Method Source Code

//package com.java2s;
/*//from  w  w  w .  j  av  a  2s . c  o m
 * 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.
 */

import java.util.Collection;

public class Main {
    /** Returns whether two collections have any elements in common. */
    public static <E> boolean intersects(Collection<E> c0, Collection<E> c1) {
        for (E e : c1) {
            if (c0.contains(e)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Returns whether an array of strings contains a given string among the
     * first <code>length</code> entries.
     *
     * @param a      Array of strings
     * @param length Number of entries to search
     * @param s      String to seek
     * @return Whether array contains the name
     */
    public static boolean contains(String[] a, int length, String s) {
        for (int i = 0; i < length; i++) {
            if (a[i].equals(s)) {
                return true;
            }
        }
        return false;
    }
}

Related

1. intersection(final Collection c1, final Collection c2)
2. intersection(final Collection a, final Collection b)
3. intersection(final Collection c1, final Collection c2)
4. intersectionSize(Collection c1, Collection c2)
5. intersects(Collection c1, Collection c2)
6. intersectsWith(Collection S1, Collection S2)
7. makeIntersection(Collection a, Collection b)
8. sizeOfIntersection(Collection a, Collection b)