数据结构实验一：单链表就地翻转

核心代码：

    public static void List_Inverse(ListNode h) {
        ListNode p = h.getNext(), q;
        while (p.next != null) {
            q = p.next;
            p.next = q.next;
            q.next = h.next;
            h.next = q;
        }
    }

然后可能前几天比较空，做了个可视化界面（普普通通，没什么特色）：

 附个代码，造福后来人

package list_inverse.java;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class View extends JFrame {

    public static class ListNode {
        String value;
        ListNode next;

        public String getValue() {
            return value;
        }

        public void setValue(String value) {
            this.value = value;
        }

        public ListNode getNext() {
            return next;
        }

        public void setNext(ListNode next) {
            this.next = next;
        }

        ListNode(String x) {
            value = x;
            next = null;
        }
    }

    private JPanel contentPane;
    private JTextField tf_inpute;
    private JTable table;
    private JButton btnNewButton_1;

    static int row;
    static String val;
    static ListNode head = new ListNode("");
    ListNode p = head;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {

        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    View frame = new View();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public View() {
        setTitle("单链表就地反转");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 700, 600);
        this.setLocationRelativeTo(null);// 居中
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        JLabel lblNewLabel = new JLabel("输入结点元素：");
        lblNewLabel.setFont(new Font("楷体", Font.PLAIN, 20));
        lblNewLabel.setBounds(82, 47, 170, 38);
        contentPane.add(lblNewLabel);

        tf_inpute = new JTextField();
        tf_inpute.setBounds(239, 50, 178, 38);
        contentPane.add(tf_inpute);
        tf_inpute.setColumns(10);

        JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(82, 110, 467, 339);
        contentPane.add(scrollPane);

        table = new JTable();
        table.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                row = table.getSelectedRow();
                val = table.getValueAt(row, 0).toString();
            }
        });
        table.setModel(new DefaultTableModel(new Object[][] {}, new String[] { "u7ED3u70B9u6570u503C" }));
        scrollPane.setViewportView(table);

        JButton btnNewButton = new JButton("reverse");
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                List_Inverse(head);
                fillTable();
            }
        });
        btnNewButton.setFont(new Font("楷体", Font.PLAIN, 20));
        btnNewButton.setBounds(407, 478, 141, 44);
        contentPane.add(btnNewButton);

        btnNewButton_1 = new JButton("提交");
        btnNewButton_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                p = head;
                while (p.getNext() != null) {
                    p = p.getNext();
                }
                String node = tf_inpute.getText();
                p.next = new ListNode(node);
                p = p.next;
                fillTable();
                tf_inpute.setText("");
            }
        });
        btnNewButton_1.setFont(new Font("楷体", Font.PLAIN, 20));
        btnNewButton_1.setBounds(449, 50, 100, 33);
        contentPane.add(btnNewButton_1);

        JButton btnNewButton_2 = new JButton("删除");
        btnNewButton_2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                p = head;
                while (p.getNext() != null && !p.getNext().getValue().equals(val)) {
                    p = p.getNext();
                }
                p.setNext(p.getNext().getNext());
                fillTable();
            }
        });
        btnNewButton_2.setFont(new Font("楷体", Font.PLAIN, 20));
        btnNewButton_2.setBounds(105, 481, 107, 38);
        contentPane.add(btnNewButton_2);

        JButton btnNewButton_3 = new JButton("清空");
        btnNewButton_3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                p = head.getNext();
                head.setNext(null);
                while (p != null) {
                    ListNode q = p;
                    p = p.getNext();
                    q = null;
                }
                fillTable();
            }
        });
        btnNewButton_3.setFont(new Font("楷体", Font.PLAIN, 20));
        btnNewButton_3.setBounds(260, 484, 100, 33);
        contentPane.add(btnNewButton_3);
    }

    public void fillTable() {
        DefaultTableModel defaultTable = (DefaultTableModel) table.getModel();
        defaultTable.setRowCount(0);
        p = head.getNext();
        while (p != null) {
            defaultTable.addRow(new Object[] { p.getValue() });
            p = p.getNext();
        }
    }

    public static void List_Inverse(ListNode h) {
        ListNode p = h.getNext(), q;
        while (p.next != null) {
            q = p.next;
            p.next = q.next;
            q.next = h.next;
            h.next = q;
        }
    }
}