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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
| using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace гарф
{
public partial class Form1 : Form
{
int n;
double[,]A;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
Random r;
r= new Random();
for(int i=0;i<n;i++)
for(int j=0;j<n;j++)
dataGridView1[j, i].Value = Math.Round(5 * r.NextDouble() + 10, 1);
}
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
n = (int)numericUpVer.Value;
dataGridView1.RowCount = dataGridView1.ColumnCount = (int)n;
for (int i = 0; i < n; i++)
dataGridView1.Rows[i].HeaderCell.Value = "V" + (i+1);
for (int j = 0; j < n; j++)
dataGridView1.Columns[j].HeaderCell.Value = "V" + (j+1);
}
private void button2_Click(object sender, EventArgs e)
{
Resyltat.Text = "";
label7.Text = "";
int i;
int INF=10000;
int []Z=new int[n];
double[] B=new double[n];
bool[] S=new bool[n];
double d = (double)numericUpd.Value;
int t = (int)numericUpVer1.Value-1;
A = new double[n, n];
bool error = false;
for (i = 0; i < n; i++)
for (int j = 0; j < n; j++)
try
{
A[i, j] = Convert.ToDouble(dataGridView1[j, i].Value);
dataGridView1[j, i].Style.ForeColor = Color.Black;
}
catch
{
dataGridView1[j, i].Style.ForeColor = Color.Blue;
dataGridView1[j, i].Value = "[" + dataGridView1[j, i].Value + "]";
error = true;
}
if (error)
{
MessageBox.Show("Ошибка в выделенных ячеках");
}
for (i = 0; i < n; i++)
for (int j = 0; j < n; j++)
if (A[i, j] < 0)
{
dataGridView1[j, i].Style.ForeColor = Color.Red;
MessageBox.Show("Допускается вводить только положительные значения ребер"); return;
}
for (i=0; i < n; i++)
for (int j = 0; j < n; j++)
{
S[i] = false;
B[i] = INF;
}
S[t]=true;
B[t] = 0;
i = t;
do
{
for (int j = 0; j < n; j++)
{
if (B[j] > B[i] + A[i, j] && A[i, j] != 0)
{
B[j] = B[i] + A[i, j];
S[j] = true;
}
}
S[i] = false;
i = -1;
for (int j = 0; j < n; j++)
{
double minB =INF;
if (S[j] == true && B[j] < minB)
{
minB = B[j];
i = j;
}
}
}
while (i != -1);
int k=0;
for (int j = 0; j < n; j++)
{
if (B[j] <= d && j != t)
{
Z[j] = (j+1);
Resyltat.Text += "вершина " + Z[j] + ": кратчайший путь равен "+B[j]+" \r\n" ;
k++;
}
}
if(k!=0)
label7.Text = Convert.ToString(k);
else
MessageBox.Show(" В заданной окрестности d= " + d + " вершины графа не лежат!");
}
private void numericUpDown3_ValueChanged(object sender, EventArgs e)
{
int n = (int)numericUpVer1.Value;
if (n > numericUpVer.Value)
numericUpVer1.Value= 1;
}
private void открытьToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog Z = new OpenFileDialog();
Z.DefaultExt = ".graph";
Z.Filter = "графы в формате graph|*.graph";
if (Z.ShowDialog ()!= DialogResult.OK)
return;
FileStream fs = new FileStream(Z.FileName, FileMode.Open);
BinaryReader br = new BinaryReader(fs);
numericUpd.Value = br.ReadInt32();
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
dataGridView1[j, i].Value = br.ReadDouble();
br.Close();
fs.Close();
}
private void сохранитьToolStripMenuItem_Click(object sender, EventArgs e)
{
A = new double[n, n];
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
A[i, j] = Convert.ToDouble(dataGridView1[j, i].Value);
SaveFileDialog Z = new SaveFileDialog();
Z.DefaultExt = ".graph";
Z.Filter = "графы в формате graph|*.graph";
if (Z.ShowDialog() != DialogResult.OK)
return;
FileStream fs = new FileStream(Z.FileName, FileMode.Create);
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(n);
foreach (double x in A)
bw.Write(x);
bw.Close();
fs.Close();
}
private void руководствоПользователяToolStripMenuItem_Click(object sender, EventArgs e)
{
Form f = new Руководство_пользователя();
f.ShowDialog();
}
private void выходToolStripMenuItem_Click(object sender, EventArgs e)
{
Form1.ActiveForm.Close();
}
private void оПрограммеToolStripMenuItem_Click_1(object sender, EventArgs e)
{
Form f = new О_программе();
f.ShowDialog();
}
}
} |
(
