JAVA 关于背包问题求解.pptx

JAVA 关于背包问题求解;button2=new JButton( 退 出 ); button1.setBounds(300, 10, 70, 30); button2.setBounds(300, 60, 70, 30); label4=new JLabel(结果如下); label4.setBounds(10,170,100,30); area=new JTextArea(); js=new JScrollPane(area); area.setEditable(false); js.setBounds(10, 200, 380, 150); label1.setFont(new Font(宋体, Font.PLAIN, 14)); label2.setFont(new Font(宋体, Font.PLAIN, 14)); label3.setFont(new Font(宋体, Font.PLAIN, 14)); label4.setFont(new Font(宋体, Font.PLAIN, 14)); button1.setFont(new Font(宋体, Font.PLAIN, 14)); button2.setFont(new Font(宋体, Font.PLAIN, 14)); text1.setFont(new Font( 宋 体 , Font.PLAIN, 16)); text2.setFont(new Font( 宋 体 , Font.PLAIN, 16)); text3.setFont(new Font( 宋 体 , Font.PLAIN, 16)); area.setFont(new Font(宋体, Font.PLAIN, 16)); jiemian.add(label1); jiemian.add(label2); jiemian.add(label3); jiemian.add(label4); jiemian.add(button1); jiemian.add(button2); jiemian.add(text1); jiemian.add(text2); jiemian.add(text3); jiemian.add(js); jiemian.setVisible(true); button1.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ capacity=Integer.valueOf(text1.getText()); if(!text1.getText().equals()){ int num=Integer.valueOf(text2.getText()); int []a=new int[num]; for (int i = 0; i num; i++);a[i] = new Integer((int) (Math.random() * 20)); String s=;//将随机数显示 for(int i=0;inum;i++){ if(i==0){ s=new String(String.valueOf(a[0])+ ); } else{ s=new String(s+String.valueOf(a[i])+ ); } } text3.setText(s); //int[] weight=new int[a.length]; /*for(int i=0;ia.length;i++){ weight[i]=a[i]; } for(int i=0;ia.length;i++){ System.out.print(weight[i]); }*/ select(capacity, a, 0, new int[a.length]); //System.out.println(capacity); if(flag==0){ JOptionPane.showMessageDialog(jiemian,无解); } } else{ JOptionPane.showMessageDialog(jiemian, 请输入背包容量); } } }); button2.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ System.exit(1); } }); } public static void main(String[] args) { Beibao b=new Beibao(); b.jiemian();;}