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| #include <stdio.h>
#include <stdlib.h>
#include <string.h>
void nex(char *s, int *next)
{
next[0] = 0;
int now = 0, x = 1;
while (x < strlen(s))
{
if (s[now] == s[x])
{
now += 1;
next[x] = now;
x += 1;
}
else if (now)
{
now = next[now - 1];
}
else
{
next[x] = 0;
x += 1;
}
}
}
int main()
{
char target[] = "dddcdabcddadcddadcddacddjaoabcdabcddadcddadcddacddababcddadabcdabcddadcddadcddacdddabcddadcddadcddacddadcdabcddadcddadcddacdddadcddacdabcddadcddadcddacdddcddadcddacddcabcddadcddadcddacddddadddadddcabcddadcddadcddacddabcddddabcddcabcddbaabcddbcabcddddcddd";
char p[] = "dabcddadcddadcddacdd";
int *next = NULL;
next = (int *)malloc(sizeof(int) * strlen(p));
nex(p, next);
int now = 0, px = 0;
while (now < strlen(target))
{
if (p[px] == target[now])
{
px += 1;
now += 1;
}
else if (px)
px = next[px-1];
else
now += 1;
if (px == strlen(p))
{
printf("%d\n", now - px+1);
px = next[px-1];
}
}
return 0;
}
|