1、遍历查找，速度相对慢，不过对于小规模数组来说不是问题：
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import java.awt.*; |
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import java.awt.event.*; |
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import javax.swing.*; |
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/** |
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* |
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* |
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*/ |
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public class ShowIndexDemo extends JFrame implements ActionListener |
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public static final int BUTTON_ARRAY_SIZE5; |
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