📄 stack-stack.html

📁 经典的数据结构源代码（java 实现）

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<html><head><title>Code Fragment</title></head><body text=#000000><center></center><br><br><dl><dd><pre> <font color=#ff0080>/**   * Interface for a stack: a collection of objects that are inserted  * and removed according to the last-in first-out principle.  This  * interface includes the main methods of java.util.Stack.  *   * @author Roberto Tamassia  * @author Michael Goodrich  * @see EmptyStackException  */</font><font color=#8000a0>public</font> <font color=#8000a0><font color=#ff8000>interface</font> </font>Stack&lt;E&gt; { <font color=#ff0080>/**  * Return the number of elements in the stack.  * @return number of elements in the stack.   */</font>  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>int</font> <font color=#0000ff>size</font>(); <font color=#ff0080>/**   * Return whether the stack is empty.  * @return true if the stack is empty, false otherwise.   */</font>  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>boolean</font> <font color=#0000ff>isEmpty</font>(); <font color=#ff0080>/**   * Inspect the element at the top of the stack.  * @return top element in the stack.    * @exception EmptyStackException if the stack is empty.   */</font>  <font color=#8000a0><font color=#8000a0>public</font> </font>E <font color=#0000ff>top</font>()     <font color=#8000a0><font color=#ff8000>throws</font> </font>EmptyStackException;   <font color=#ff0080>/**  * Insert an element at the top of the stack.  * @param element to be inserted.  */</font>  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>void</font> <font color=#0000ff>push </font>(E element);  <font color=#ff0080>/**   * Remove the top element from the stack.  * @return element removed.  * @exception EmptyStackException if the stack is empty.  */</font>  <font color=#8000a0><font color=#8000a0>public</font> </font>E <font color=#0000ff>pop</font>()    <font color=#8000a0><font color=#ff8000>throws</font> </font>EmptyStackException; }</dl></body></html>

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