27 lines
754 B
C++
27 lines
754 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 100010;
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const int M = 1000010;
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int n, m, ne[N];
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char s[M], p[N];
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int main() {
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cin >> n >> (p + 1) >> m >> (s + 1);
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for (int i = 2; i <= n; i++) {
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int j = ne[i - 1]; //其实这是原始版本，代码等价变型后成为了831_1.cpp
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// j的含义:指向当前位置前一位的失配指针位置
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while (j && p[i] != p[j + 1]) j = ne[j];
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if (p[i] == p[j + 1]) j++;
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ne[i] = j;
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}
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for (int i = 1, j = 0; i <= m; i++) {
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while (j && s[i] != p[j + 1]) j = ne[j];
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if (s[i] == p[j + 1]) j++;
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if (j == n) {
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printf("%d ", i - n);
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j = ne[j];
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}
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}
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return 0;
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} |