Example usage for java.util Collection contains

Introduction

In this page you can find the example usage for java.util Collection contains.

Prototype

boolean contains(Object o);

Source Link

Document

Returns true if this collection contains the specified element.

Usage

From source file:Main.java

public static boolean nonEmptyIntersection(Collection<? extends Object> collection1,
        Collection<? extends Object> collection2) {

    for (Object obj : collection1) {
        if (collection2.contains(obj)) {
            return true;
        }/* w ww .  ja va  2  s  . com*/
    }
    return false;
}

From source file:Main.java

public static <T> ArrayList<T> inter(Collection<T> l1, Collection<T> l2) {
    ArrayList<T> l = new ArrayList<>();
    for (T e : l1) {
        if (l2.contains(e)) {
            l.add(e);/*from w ww  .  j a v  a  2s .  com*/
        }
    }
    return l;
}

From source file:Main.java

public static boolean intersect(Collection<?> a, Iterable<?> iterable) {
    for (Object ele : iterable) {
        if (a.contains(ele))
            return true;
    }//from  w  w w  .  j a  v a  2 s .  co  m
    return false;
}

From source file:Main.java

/**
 * Checks if any of the elements in the first collection can be found in the
 * second collection.//www. ja  v a2s  . c o m
 *
 * @param findAnyOfThese which elements to look for.
 * @param inThisCollection where to look for them.
 * @param <E> type of the elements in question.
 * @return {@code true} if any of the elements in {@code findAnyOfThese} can
 *         be found in {@code inThisCollection}, {@code false} otherwise.
 */
public static <E> boolean isAnyIncludedIn(Collection<E> findAnyOfThese, Collection<E> inThisCollection) {
    for (E findThisItem : findAnyOfThese) {
        if (inThisCollection.contains(findThisItem)) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

public static <T> List<T> intersection(Collection<T> a, Collection<T> b) {
    List<T> list = new ArrayList<>();

    for (T element : a) {
        if (b.contains(element)) {
            list.add(element);//from ww  w .j  ava  2 s . c o m
        }
    }
    return list;
}

From source file:Main.java

/** @return whether given coll contains all elements of other, using a naive/basic algorithm. */
public static boolean containsAll(Collection<?> coll, Collection<?> other) {
    for (Object otherElement : other) {
        if (!coll.contains(otherElement))
            return false;
    }/* w  ww.java  2 s . c  o  m*/
    return true;
}

From source file:Main.java

/**
 * Check whether <code>c2</code> contains any element in <code>c1</code>.
 * @param <E> The type of the arguments.
 * @param c1 Base collection against which we check.
 * @param c2 Collection which should contain any of the elements in c1.
 * @return <code>true</code> iff at least one element of <code>c1</code> is
 * contained in <code>c2</code>.
 *//*from w  w w  .  j  a  v  a  2  s.co  m*/
public static <E> boolean containsAny(Collection<E> c1, Collection<E> c2) {
    for (final E elem : c1) {
        if (c2.contains(elem)) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

/**
 * Check whether <code>c2</code> contains any element in <code>c1</code>.
 * @param <E> The type of the arguments.
 * @param c1 Base collection against which we check.
 * @param c2 Collection which should contain any of the elements in c1.
 * @return <code>true</code> iff at least one element of <code>c1</code> is
 * contained in <code>c2</code>.
 *///from  w ww.  j a va 2  s .  com
public static <E> boolean containsAny(E[] c1, Collection<E> c2) {
    for (final E elem : c1) {
        if (c2.contains(elem)) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

public static <T> int intersectionSize(Collection<T> one, Collection<T> two) {
    int intersection = 0;
    for (T item : one) {
        if (two.contains(item)) {
            intersection++;//from   w w  w.jav a 2s.c o  m
        }
    }
    return intersection;
}

From source file:Main.java

public static boolean containsAny(Collection<?> source, Collection<?> candidates) {
    for (Object o : candidates) {
        if (source.contains(o)) {
            return true;
        }/* w w  w . ja  v a  2 s  . c  o m*/
    }
    return false;
}