質問編集履歴
1
すべて
test
CHANGED
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@@ -1 +1 @@
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1
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-
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1
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+
分からないことは解決しました
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test
CHANGED
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@@ -1,131 +1 @@
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1
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-
分からないこと
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1
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+
質問しておりました分からないことは解決しました。ありがとうございました。
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2
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-
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3
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4
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-
```ここに言語を入力
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5
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-
import javax.swing.*;
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6
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-
import java.awt.*;
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7
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import java.awt.event.*;
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8
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-
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9
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public class QuickSort1 extends JPanel implements Runnable, ActionListener {
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10
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/* フィールドは、ほとんど BubbleSort1 と同じ */
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11
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private int[] args = new int[18];
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12
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private final Color[] cs = { Color.RED, Color.ORANGE, Color.GREEN, Color.BLUE };
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13
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private volatile Thread thread = null;
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14
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private int i, j;
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15
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-
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16
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private volatile boolean threadSuspended = true; /* 追加のフィールド */
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17
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-
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18
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public QuickSort1() {
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19
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setPreferredSize(new Dimension(320, 250));
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20
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JButton step = new JButton("Step");
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21
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step.addActionListener(this);
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22
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setLayout(new FlowLayout());
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23
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add(step);
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24
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startThread();
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25
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}
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26
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-
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27
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/* startTread は BubbleSort1 と同じ */
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28
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private void startThread() {
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29
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if (thread == null) {
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30
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thread = new Thread(this);
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31
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thread.start();
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32
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}
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33
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}
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34
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-
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35
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public void swap(int[] v, int i, int j) {
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36
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int tmp = v[i];
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37
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v[i] = v[j];
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38
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v[j] = tmp;
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39
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}
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40
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-
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41
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public void qsort(int[] v, int left, int right) {
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42
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if (left >= right)
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43
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return;
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44
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int i = left, j = right;
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45
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int pivot = v[i + (j - i) / 2];
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46
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while (true) {
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47
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while (v[i] < pivot)
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48
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i++;
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49
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while (pivot < v[j])
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50
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j--;
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51
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if (i >= j)
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52
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break;
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53
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swap(v, i, j);
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54
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repaint();
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55
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/* repaint の後で止まる */
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56
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try {
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57
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synchronized (this) {
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58
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while (threadSuspended) {
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59
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wait();
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60
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}
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61
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threadSuspended = true;
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62
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}
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63
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} catch (InterruptedException e) {
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64
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}
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65
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//try { Thread.sleep(400); } catch (InterruptedException e) {}
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66
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i++;
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67
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j--;
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68
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}
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69
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qsort(v, left, i - 1);
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70
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qsort(v, j + 1, right);
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71
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}
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72
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-
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73
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public void run() {
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74
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while (true) {
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75
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prepareRandomData();
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76
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// クイックソートのアルゴリズム
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77
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//qsort(args, args[0], args[args.length - 1]);
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78
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qsort(args, 0, args.length - 1);
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79
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repaint();
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80
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/* repaint の後で止まる */
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81
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try {
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82
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synchronized (this) {
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83
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while (threadSuspended) {
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84
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wait();
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85
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}
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86
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threadSuspended = true;
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87
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}
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88
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} catch (InterruptedException e) {
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89
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}
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90
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}
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91
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}
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92
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-
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93
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public synchronized void actionPerformed(ActionEvent e) {
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94
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threadSuspended = false;
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95
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notify();
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96
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}
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97
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/* paintComponent, main などは BubbleSort1 と同じ */
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98
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-
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99
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@Override
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100
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public void paintComponent(Graphics g) {
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101
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int k;
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102
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-
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103
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super.paintComponent(g);
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104
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g.setColor(Color.YELLOW);
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105
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g.fillOval(5, 50 + j * 10, 10, 10);
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106
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g.setColor(Color.CYAN);
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107
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g.fillOval(5, 50 + i * 10, 10, 10);
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108
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for (k = 0; k < args.length; k++) {
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109
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g.setColor(cs[k % cs.length]);
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110
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g.fillRect(20, 50 + k * 10, args[k] * 5, 10);
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111
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}
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112
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}
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113
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-
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114
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-
private void prepareRandomData() {
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115
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-
int len = args.length;
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116
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-
for (int k = 0; k < len; k++) {
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117
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args[k] = (int) (Math.random() * 50); // 適当な範囲の乱数
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118
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-
}
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119
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-
}
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|
120
|
-
|
|
121
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-
public static void main(String[] args) {
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|
122
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-
SwingUtilities.invokeLater(() -> {
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|
123
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JFrame frame = new JFrame("クイックソート");
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124
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-
frame.add(new QuickSort1());
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125
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-
frame.pack();
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126
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-
frame.setVisible(true);
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|
127
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-
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
|
|
128
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-
});
|
|
129
|
-
}
|
|
130
|
-
}
|
|
131
|
-
```
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