Java Iterable getIdenticalElement(Iterable<T> iterable)

Description

get Identical Element

License

Open Source License

Declaration

public static <T> T getIdenticalElement(Iterable<T> iterable)

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Iterator;

public class Main {
    /**/* w w w.j  ava  2 s  . co m*/
     * @see JavaHelper#getIdenticalElement(Iterator)
     */
    public static <T> T getIdenticalElement(Iterable<T> iterable) {
        return getIdenticalElement(iterable.iterator());
    }

    /**
     * If all elements in the iterator are (equal-)identical, return the element
     * (the first). Else return <code>null</code>.
     */
    public static <T> T getIdenticalElement(Iterator<T> iterator) {
        if (!iterator.hasNext()) {
            return null;
        }

        final T result = iterator.next();

        while (iterator.hasNext()) {
            T next = iterator.next();
            if (!result.equals(next)) {
                return null;
            }
        }

        return result;
    }
}

Java Iterable getIdenticalElement(Iterable iterable)

Description

License

Declaration

Method Source Code

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