Question

尝试添加时，如果isFull()为真，则需要调整为两倍大小。

public boolean add(T element) {
    if (this.contains(element)) {
        return false;
    }

    if (isFull()) {  
        resize(elements.length * 2);
    }
    //etc,etc.
}

//check if full   
private boolean isFull() {
    if (size == elements.length) {
        return true;
    }

    return false;
}

//resize 
private void resize(int capacity)
    T[] a = Arrays.<T>copyOf(elements, capacity);
    elements = a;
}

但是，我的调整大小方法出错。

Error:ArraySet.java:114: error: cannot find symbol
      T[] a = Arrays.<T>copyOf(elements, capacity);
              ^
  symbol:   variable Arrays
  location: class ArraySet<T>
  where T is a type-variable:
    T extends Comparable<? super T> declared in class ArraySet
1 error

我做错了什么？我可以做些什么来调整大小？我该如何调整大小？

import java.util.Iterator;
import java.util.NoSuchElementException;

public class ArraySet<T extends Comparable<? super T>> implements Set<T> {
T[] elements;
int size;

@SuppressWarnings("unchecked")
public ArraySet() {
   elements = (T[]) new Comparable[1];
   size = 0;
}

public int size() {
     return size;
  }
public boolean isEmpty() {
  return size == 0;

}

........这就足够了吗？

调整数组大小，但获取数组

0 个答案: