交替字符串 不知道哪里出了问题 QAQ

[云之_彼端]

#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;
class HelloWord {
public:
	static string getInfo(string str)
	{
		string str1, str2, str3;
		bool bl = false;
		cin >> str1;
		cin >> str2;
		cin >> str3;
		int s1 = str1.size(), s2 = str2.size(), s3 = str3.size();
		int i = 0, x = 0, y = 0;
		if (s1 + s2 == s3 && (s1!=0 || s2!=0))
		{
			for (; i != s3; i++)
			{
				if (str3[i] == str1[x])
				{
					x++;
					bl = true;
				}
				else if (str3[i] == str2[y])
				{
					y++;
					bl = true;
				}
				else
				{
					bl = false;
					str = "NO";
					break;
				}
			}
			if (bl)
			{
				str = "YES";
			}
		}
		else
		{
			str = "NO";
		}
		return str;
	}
};
int main()
{
	string c = HelloWord::getInfo("Hello World");
	cout << c << endl;
}

[云之_彼端]

引用 2 楼 Automation_dmu 的回复:

有啥问题？还有你想实现什么效果？

就是那个编程挑战里的 交替字符串~

[云之_彼端]

引用 1 楼 logiciel 的回复:

试加2行:

#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;
class HelloWord {
public:
  static string getInfo(string str)
  {
    string str1, str2, str3;
    bool bl = false;
    cin >> str1;
    cin >> str2;
    cin >> str3;
    int s1 = str1.size(), s2 = str2.size(), s3 = str3.size();
    int i = 0, x = 0, y = 0;
    if (s1 + s2 == s3 && (s1!=0 || s2!=0))
    {
      for (; i != s3; i++)
      {
        if (str3[i] == str1[x])
        {
          x++;
          bl = true;
          if (x == s1) break;//加
        }
        else if (str3[i] == str2[y])
        {
          y++;
          bl = true;
          if (y == s2) break;//加
        }
        else
        {
          bl = false;
          str = "NO";
          break;
        }
      }
      if (bl)
      {
        str = "YES";
      }
    }
    else
    {
      str = "NO";
    }
    return str;
  }
};
int main()
{
  string c = HelloWord::getInfo("Hello World");
  cout << c << endl;
}

诶？ 我那个 if else if else 不是一组的吗？？ 只会执行其中一个的吧？ 唔...

[logiciel]

试加2行:

#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;
class HelloWord {
public:
  static string getInfo(string str)
  {
    string str1, str2, str3;
    bool bl = false;
    cin >> str1;
    cin >> str2;
    cin >> str3;
    int s1 = str1.size(), s2 = str2.size(), s3 = str3.size();
    int i = 0, x = 0, y = 0;
    if (s1 + s2 == s3 && (s1!=0 || s2!=0))
    {
      for (; i != s3; i++)
      {
        if (str3[i] == str1[x])
        {
          x++;
          bl = true;
          if (x == s1) break;//加
        }
        else if (str3[i] == str2[y])
        {
          y++;
          bl = true;
          if (y == s2) break;//加
        }
        else
        {
          bl = false;
          str = "NO";
          break;
        }
      }
      if (bl)
      {
        str = "YES";
      }
    }
    else
    {
      str = "NO";
    }
    return str;
  }
};
int main()
{
  string c = HelloWord::getInfo("Hello World");
  cout << c << endl;
}

[AndyStevens]

有啥问题？还有你想实现什么效果？

[云之_彼端]

QAQ...................