题解 | #Counterfeit Dollar#

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int mycmp(char s1[],char s2[],int len)//自定义的字符数组比较
{
   int flag=1;
   if(strlen(s2)!=len)flag=0;
   for(int i=0;i<len&&flag;i++)
   if(s1[i]!=s2[i])
   {
   flag=0;
   }
   return flag;
}

int main(void)
{
	// int n=0;
	// cin>>n;//获取测试次数
    // getchar();//'\n'的处理
    for(int i=0;i<1;i++)
    {
    	char test_left[3][6],test_right[3][6],result[3][6];//分别表示左重，右重，以及大小关系
        int result_number[3];
		int len[3];
		int len_result[3];
		for(int j=0;j<3;j++)
        {
         int h=0;
         while(scanf("%c",&test_left[j][h])!=EOF&&test_left[j][h]!=' ')
         {
         h++;
		 }
		 h=0;
         while(scanf("%c",&test_right[j][h])!=EOF&&test_right[j][h]!=' ')
         {
         h++;
		 }
         int k=0;
         while(scanf("%c",&result[j][k])!=EOF&&result[j][k]!='\n')
         {
         k++;
		 }
		 len_result[j]=k;
		 len[j]=h;
	    }//以上for中为读入数据
	  
		 for(int i=0;i<3;i++)
		{
		  if(mycmp(result[i],"up",len_result[i]))
		   {
		 	result_number[i]=1;
		   } 
		  else if(mycmp(result[i],"down",len_result[i]))
		   {
		 	result_number[i]=-1;
		   }
		 
		  else if(mycmp(result[i],"even",len_result[i]))
		   {
		 	result_number[i]=0;
		   } 
		}//将对应大小关系转化为数字便于后序比较
//		cout<<"result:"<<endl;
//		for(int i=0;i<3;i++)
//		cout<<result_number[i]<<endl;
		 /*上述为读入数据*/
		 /*枚举各种情况*/
		 int m;
		 int is_heavy=-1; 
		 for(m=0;m<12&&is_heavy==-1;m++)
		 { 
    	    /*假币重时*/
		   for(int line=0;line<3&&is_heavy==-1;line++)
		    {
		     int sum_left=0;
    	     int sum_right=0;
//		     cout<<test_left[line];
		     for(int i=0;i<len[line];i++)
		      {
		       if(test_left[line][i]==(char)(m+int('A')))
			     {
			 	 sum_left++;
			     }//左边
			   if(test_right[line][i]==(char)(m+int('A')))
			     {
			     sum_right++; 
		     	 }//右边
		      }//判断是否为假设的假币并对大小处理；
//		      cout<<"heavy--"<<(char)(m+int('A'))<<":";
//		      cout<<line<<" :  "<<sum_left<<"  "<<sum_right<<"  ";
		      if(sum_left-sum_right!=result_number[line])
			  {
			   sum_left=0;
    	       sum_right=0;
			   break;
	          }//判断是否满足对应结果，不满足则结束本轮
	          if(line==2)
	          {
	           	is_heavy=1;
			  }//到最后时没有不满足，则说明成立
			  sum_left=0;
    	      sum_right=0;
			}
//			cout<<endl;
	          /*假币轻*/
	        for(int line=0;line<3&&is_heavy==-1;line++)
		    {
		      int sum_left=0;
    	      int sum_right=0;	
		      for(int i=0;i<len[line];i++)
		       {
		        if(test_left[line][i]==(char)(m+int('A')))
			     {
			 	 sum_left--;
			     }
			    if(test_right[line][i]==(char)(m+int('A')))
			     {
			     sum_right--; 
		     	 }
		       }
//		      cout<<"light--"<<(char)(m+int('A'))<<" :";
//		      cout<<line<<" :  "<<sum_left<<"  "<<sum_right<<"   ";
//		      cout<<"number    "<<result_number[line];
		      if(sum_left-sum_right!=result_number[line])
			   {
			    sum_left=0;
    	        sum_right=0;
			    break;
	           }
	          if(line==2)
	          {
	           	is_heavy=0;
			  }
	           sum_left=0;
    	       sum_right=0;
	        }
//	        cout<<endl;
		 } 
		 
		if(is_heavy==0)cout<<(char)(m+int('A')-1)<<" is the counterfeit coin and it is light.";
		else if(is_heavy==1) cout<<(char)(m+int('A')-1)<<" is the counterfeit coin and it is heavy.";
	}
	return 0;
}