Removes an element from a copy of the array and returns the copy. - Android java.lang

Android examples for java.lang:array element remove

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Description

Removes an element from a copy of the array and returns the copy.

Demo Code

import java.lang.reflect.Array;

public class Main{

    /**// ww  w  .ja  v  a2s.  co m
     * Removes an element from a copy of the array and returns the copy.
     * If the element is not present, then the original array is returned unmodified.
     * @param array The original array, or null to represent an empty array.
     * @param element The element to remove.
     * @return A new array that contains all of the elements of the original array
     * except the first copy of the specified element removed.  If the specified element
     * was not present, then returns the original array.  Returns null if the result
     * would be an empty array.
     */
    @SuppressWarnings("unchecked")
    public static <T> T[] removeElement(Class<T> kind, T[] array, T element) {
        if (array != null) {
            final int length = array.length;
            for (int i = 0; i < length; i++) {
                if (array[i] == element) {
                    if (length == 1) {
                        return null;
                    }
                    T[] result = (T[]) Array.newInstance(kind, length - 1);
                    System.arraycopy(array, 0, result, 0, i);
                    System.arraycopy(array, i + 1, result, i, length - i
                            - 1);
                    return result;
                }
            }
        }
        return array;
    }

}

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