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831. KMP字符串

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https://www.acwing.com/problem/content/submission/code_detail/8121100/
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Baoshuo Ren 2021-10-09 09:46:32 +08:00 committed by Baoshuo Ren
parent 4919169d97
commit 9975626619
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
1 changed files with 26 additions and 0 deletions
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AcWing/831/831.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int m, n, nxt[100005];
string p, s;
int main() {
cin >> n >> p >> m >> s;
nxt[0] = -1;
for (int i = 1, j = -1; i < n; i++) {
while (j >= 0 && p[j + 1] != p[i]) j = nxt[j];
if (p[j + 1] == p[i]) j++;
nxt[i] = j;
}
for (int i = 0, j = -1; i < m; i++) {
while (j != -1 && s[i] != p[j + 1]) j = nxt[j];
if (s[i] == p[j + 1]) j++;
if (j == n - 1) {
cout << i - j << ' ';
j = nxt[j];
}
}
cout << endl;
return 0;
}