刷题：华为机试 HJ30 字符串合并处理

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

int main()
{
    string s1, s2,s3;
    while (cin >> s1 >> s2)
    {
        s3 = s1 + s2;
        vector<char> s4, s5;
        for (int i = 0; i < s3.length(); i++) 
        {
            if ((i + 1) % 2 == 0)
            {
                s5.push_back(s3[i]);
            }
            else
            {
                s4.push_back(s3[i]);
            }
        }
        sort(s4.begin(), s4.end());
        sort(s5.begin(), s5.end());

        int len = s3.length();
        s3.clear();//清空s3中的元素，但不回收空间
        for (int i = 0,m=0,n=0; i < len; i++)
        {
            if ((i + 1) % 2 == 0)
            {
                s3.push_back(s5[m]);
                m++;
            }
            else
            {
                s3.push_back(s4[n]);
                n++;
            }
        }

        for (int i = 0; i < len; i++)
        {
            if (s3[i] >= '0' && s3[i] <= '9')
            {
                switch (s3[i])
                {
                case '0':s3[i] = '0'; break;
                case '1':s3[i] = '8'; break;
                case '2':s3[i] = '4'; break;
                case '3':s3[i] = 'C'; break;
                case '4':s3[i] = '2'; break;
                case '5':s3[i] = 'A'; break;
                case '6':s3[i] = '6'; break;
                case '7':s3[i] = 'E'; break;
                case '8':s3[i] = '1'; break;
                case '9':s3[i] = '9'; break;
                default:
                    break;
                }
            }
            else if(s3[i] >= 'a' && s3[i] <= 'f')
            {
                switch (s3[i])
                {
                case 'a':s3[i] = '5'; break;
                case 'b':s3[i] = 'D'; break;
                case 'c':s3[i] = '3'; break;
                case 'd':s3[i] = 'B'; break;
                case 'e':s3[i] = '7'; break;
                case 'f':s3[i] = 'F'; break;
                default:
                    break;
                }
            }
            else if (s3[i] >= 'A' && s3[i] <= 'F')
            {
                switch (s3[i])
                {
                case 'A':s3[i] = '5'; break;
                case 'B':s3[i] = 'D'; break;
                case 'C':s3[i] = '3'; break;
                case 'D':s3[i] = 'B'; break;
                case 'E':s3[i] = '7'; break;
                case 'F':s3[i] = 'F'; break;
                default:
                    break;
                }
            }
        }
        cout << s3 << endl;
    }

    return 0;
}