kmp算法伪代码c语言
时间: 2023-10-19 21:31:58 浏览: 110
当然,我可以为您提供KMP算法的伪代码示例,用C语言编写。以下是一个简单的实现:
```c
#include <stdio.h>
#include <string.h>
void computeLPSArray(char* pattern, int* lps) {
int i = 1, len = 0;
int pattern_length = strlen(pattern);
lps[0] = 0;
while (i < pattern_length) {
if (pattern[i] == pattern[len]) {
len++;
lps[i] = len;
i++;
}
else {
if (len != 0) {
len = lps[len-1];
}
else {
lps[i] = 0;
i++;
}
}
}
}
void KMPSearch(char* text, char* pattern) {
int text_length = strlen(text);
int pattern_length = strlen(pattern);
int lps[pattern_length];
computeLPSArray(pattern, lps);
int i = 0, j = 0;
while (i < text_length) {
if (pattern[j] == text[i]) {
j++;
i++;
}
if (j == pattern_length) {
printf("Pattern found at index %d\n", i - j);
j = lps[j - 1];
}
else if (i < text_length && pattern[j] != text[i]) {
if (j != 0)
j = lps[j - 1];
else
i++;
}
}
}
int main() {
char text[] = "ABABDABACDABABCABAB";
char pattern[] = "ABABCABAB";
KMPSearch(text, pattern);
return 0;
}
```
这是一个简单的KMP算法实现,它可以在给定的文本中搜索指定的模式,并在找到匹配时输出其索引。请注意,此代码只是一个示例,并且可能需要根据您的实际需求进行修改。
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