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题解 | 小红的优惠券

#include <iostream> using namespace std; int main() { int n, m; int a, b, min_amount = 100000; while (cin >> n >> m) { ...

2026-01-04

0 11

题解 | 字符串字符匹配

#include <iostream> using namespace std; int main() { string s, t; cin >> s; cin >> t; for (char c : s) { i...

2026-01-03

0 15

题解 | 输入n个整数，输出其中最小的k个

#include <algorithm> #include <iostream> #include <vector> using namespace std; int main() { int n, k; while (cin >> ...

2026-01-03

0 13

题解 | 找出字符串中第一个只出现一次的字符

#include <iostream> #include <vector> using namespace std; int main() { string s; vector<int> cnt(128); //存放字母出现次数 whil...

2026-01-03

0 17

题解 | 进制转换

#include <cmath> #include <iostream> using namespace std; int main() { string s ; while (cin >> s) { int bit = 0, n...

2026-01-03

0 14

题解 | 字符串排序

#include <algorithm> #include <iostream> #include <vector> using namespace std; int main() { int n; vector<string> ar...

2026-01-03

0 16

题解 | 统计字符

#include <iostream> using namespace std; int main() { string s; int cnt_letter = 0, cnt_blank = 0, cnt_num = 0, cnt_other = 0; whil...

2026-01-03

0 17

题解 | 查找组成一个偶数最接近的两个素数

#include <iostream> using namespace std; bool isprime(int k) { for (int i = 2; i * i <= k; ++i) { if (k % i == 0) re...

2026-01-02

0 12

题解 | 截取字符串

#include <iostream> using namespace std; int main() { string s; int k; while (cin>>s>>k) { cout << s.subs...

2026-01-02

0 16

题解 | 字符个数统计

#include <iostream> using namespace std; int main() { string s; int cnt = 0; while (getline(cin, s)) { int arr[128] = {0}; ...

2026-01-01

0 19