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
|
#include <iostream>
using namespace std;
int countWords(const char* text)
{
bool wasLastCharSpace = true;
int wordCount = 0;
int len = strlen(text);
for (int i = 0; i < len; i++)
{
if (wasLastCharSpace && text[i] != ' ' )
{
wordCount++;
wasLastCharSpace = false;
}
else if (text[i] == ' ')
wasLastCharSpace = true;
}
return wordCount;
}
int getWordLength(const char* text, int start)
{
int len = 0;
int index = start;
while (text[index] != ' ' && text[index] != '\0')
{
index++;
len++;
}
return len;
}
void copyChars(char* dest, const char* text, int start, int len)
{
for (int i = start, index = 0; index < len; i++, index++)
dest[index] = text[i];
dest[len] = '\0';
}
void fillWords(char** words, const char* text)
{
int len = strlen(text);
int currentWordIndex = 0;
for (int i = 0; i < len; i++)
{
if (text[i] == ' ')
continue;
int currentWordLen = getWordLength(text, i);
words[currentWordIndex] = new char[currentWordLen + 1]; //(**)
copyChars(words[currentWordIndex], text, i, currentWordLen);
currentWordIndex++;
i += currentWordLen;
}
}
void swap(char** arr, int i, int j)
{
char* wordPtr = arr[i];
arr[i] = arr[j];
arr[j] = wordPtr;
}
void selectionSort(char** arr, int len)
{
for (int pos = 0; pos < len - 1; pos++)
{
int minIndex = pos;
for (int i = pos; i < len; i++)
{
if (strcmp(arr[i], arr[minIndex]) < 0)
minIndex = i;
}
if (pos != minIndex)
swap(arr, pos, minIndex);
}
}
void free(char** words, int wordsCount)
{
for (int i = 0; i < wordsCount; i++)
delete[] words[i]; // (**)
delete[] words; // (*)
}
bool hasDuplicatesWords(const char* text)
{
int wordsCount = countWords(text);
char** words = new char*[wordsCount]; // (*)
fillWords(words, text);
selectionSort(words, wordsCount);
for (int i = 0; i < wordsCount - 1; i++)
{
if (strcmp(words[i], words[i + 1]) == 0)
return true;
}
return false;
free(words, wordCount);
}
int main()
{
const char* text = " hello friends. how are you frienYds. ";
cout << hasDuplicatesWords(text);
}
|
