笔试强训2

---

👉🏻字符串反转

mycode:100%

#include 
#include
using namespace std;

int main() {
    string s;
    cin>>s;
    reverse(s.begin(),s.end());
    cout<<s<<endl;
}
1
2
3
4
5
6
7
8
9
10

👉🏻公共子串计算

mycode:100%

#include 
using namespace std;

int main() {
    string s1, s2;
    cin >> s1 >> s2;
    //s1所有字串组合在s2中遍历寻找
    int size = s1.size();
    int maxlen = 0;
    for (int i = 0; i < s1.size(); i++)
    {
        for (int j = i+1; j <= size; j++)
        {
            string tmp(s1.begin() + i, s1.begin() + j);
            if (s2.find(tmp) != string::npos)
            {
                if (tmp.size() > maxlen)
                    maxlen = tmp.size();
            }
        }
       
    }
    cout << maxlen << endl;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

string迭代器左闭右开！