algorithm-design/widget.cpp at master · codeporter233/algorithm-design · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
#include "widget.h"
#include <QFont>
#include <QString>
#include <QDebug>
#include <QMessageBox>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    init();
}

Widget::~Widget()
{
}

void Widget::init()
{
    resize(600,400);

    btn1 = new QPushButton("下一步",this);
    btn1->setFixedSize(90,50);
    btn1->move(490,320);
    btn1->show();

    btn2 = new QPushButton("退出",this);
    btn2->setFixedSize(90,50);
    btn2->move(20,320);
    btn2->show();

    QFont lbl_font;

    lbl_font.setPointSize(25);
    label_title = new QLabel(this);
    label_title->setFont(lbl_font);
    label_title->setText("算法实验:迷你正则表达式");
    label_title->setGeometry(50, 50, 600, 60);
    label_title->show();

    lbl_font.setPointSize(10);
    label_rep = new QLabel(this);
    label_rep->setFont(lbl_font);
    label_rep->setText("项目开源:https://github.com/codeporter233/algorithm-design");
    label_rep->setGeometry(20, 220, 600, 30);
    label_rep->show();

    lbl_font.setPointSize(16);
    label_info = new QLabel(this);
    label_info->setFont(lbl_font);
    label_info->setText("1807004534  凌超");
    label_info->setGeometry(20, 280, 220, 30);
    label_info->show();

    connect(btn2, &QPushButton::clicked, this, &Widget::close);
    connect(btn1, &QPushButton::clicked, this, &Widget::data);

}

void Widget::data()
{
    label_rep->close();
    label_title->close();
    label_info->close();

    btn3 = new QPushButton("开始",this);
    btn3->setFixedSize(90,50);
    btn3->move(255,320);
    btn3->show();

    QFont lbl_font;

    lbl_font.setPointSize(12);
    label_pstr = new QLabel(this);
    label_pstr->setFont(lbl_font);
    label_pstr->setText("模板字符串:");
    label_pstr->setGeometry(50, 100, 600, 60);
    label_pstr->show();

    lbl_font.setPointSize(12);
    label_str = new QLabel(this);
    label_str->setFont(lbl_font);
    label_str->setText("字符串:");
    label_str->setGeometry(70, 150, 600, 60);
    label_str->show();

    qle_pstr = new QLineEdit(this);
    qle_pstr->setPlaceholderText("可以带有'*'''?");
    qle_pstr->setGeometry(175,115,300,30);
    qle_pstr->show();

    qle_str = new QLineEdit(this);
    qle_str->setPlaceholderText("输入一个字符串");
    qle_str->setGeometry(175,165,300,30);
    qle_str->show();

    connect(btn3, &QPushButton::clicked, this, &Widget::handleData);
}

void Widget::handleData()
{

    QString pstr = qle_pstr->text();
    QString str = qle_str->text();

    bool ismatch = match(str,pstr);
    if (ismatch)
        QMessageBox::information(this, "提示", "匹配成功");

    else
        QMessageBox::critical(this, "提示", "匹配失败");

}

int Widget::match(const QString &s, const QString &p)
{
    int m = s.length();
    int n = p.length();

    bool dp[105][105];
    memset(dp, false, sizeof(dp));
    dp[0][0] = true;

    for (int i = 1; i <= n; i++)
    {
        dp[0][i] = dp[0][i - 1] && p[i - 1] == '*';
    }

    for (int i = 1; i <= m; i++) {
        for (int j = 1; j <= n; j++) {
           if (s[i - 1] == p[j - 1] || p[j - 1] == '?') {
                dp[i][j] = dp[i - 1][j - 1];
            }
           else if (p[j - 1] == '*') {
               dp[i][j] = dp[i][j - 1] || dp[i - 1][j];
           }
        }
    }

    return dp[m][n];
}