2021-08-14

Posted 2021-09-06 李憨憨_

练习一

OR62：倒置字符串
题目描述：

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    string str;
    while(getline(cin, str))
    {
        reverse(str.begin(), str.end());
        auto start = str.begin();
        while(start != str.end())
        {
            auto end = start;
            while(end != str.end() && *end != ' ')
                end++;
            reverse(start, end);
            if(end != str.end())
                start = end + 1;
            else
                start = end;
        }
        cout << str << endl;
    }
    return 0;
}

练习二

WY33计算糖果：
题目描述：

#include <iostream>
using namespace std;

int main()
{
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    int A = (a + c) / 2;
    int B1 = (b + d) / 2;
    int B2 = (c - a) / 2;
    int C = d - B1;
    if(B1 != B2)
        cout << "No" << endl;
    else
        cout << A << " " << B1 << " " << C << endl;
    return 0;
}

练习三

DD5进制转换
题目描述

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    string s, table = "0123456789ABCDEF";
    int m,n;
    cin >> m >> n;
    bool flag = false;
    if(m < 0)
    {
         m = 0 - m;
        flag = true;
    }
    while(m)
    {
        s += table[m % n];
        m /= n;
    }
    if(flag)
        s += '-';
    reverse(s.begin(), s.end());
    cout << s << endl;
    return 0;
}