华为笔试——C++的int型数字位排序

 1 #include <iostream>
 2 #include <string>
 3 using namespace std;
 4 int main()
 5 {
 6     string str;
 7     int size;
 8     int i = 0, j = 0;
 9     while (cin >> str)
10     {
11         size = str.size();
12         char *p = new char[size];
13         strcpy(p, str.c_str());
14         for (i = 0; i < size; i++)
15         {
16             for (j = 0; j < size; j++)
17             {
18                 if (p[i] == p[j] && i < j)
19                 {
20                     p[i] = ‘a‘;
21                 }
22             }
23         }
24         if (p[0] == ‘-‘) { cout << "-"; }
25         for (i = 0; i < size; i++)
26         {
27             if (p[size - 1 - i] >= ‘0‘&&p[size - 1 - i] <= ‘9‘)
28             {
29                 cout << p[size - 1 - i];
30             }
31         }
32         cout << endl;
33     }
34 }