如何对Vector去重呢?

实现思路:
     方式1:
	    使用for循环进行遍历去重
	 方式2:
	    借助HashSet对Vector集合去重

/**
 * 遍历去重
 * @param vector
 * @return
 */
private static Vector<Object> removal1(Vector<Object> vector){
    Vector<Object> newVector = new Vector<Object>();
    for (int i=0; i< vector.size(); i++){
        Object obj = vector.get(i);
        if(!newVector.contains(obj)){
            newVector.add(obj);
        }
    }
    return newVector;
}

/**
 * set去重
 * @param vector
 * @return
 */
private static Vector<Object> removal2(Vector<Object> vector){
    HashSet<Object> set = new HashSet<Object>(vector);
    return new Vector<Object>(set);
}