Srm144-300Dirty

Srm144-300Dirty

#include<vector>
#include<iostream>

using namespace std;


class BinaryCode {
public:
  vector<string> decode(string message){

    vector<string> rVector;

    string rString;
    for(int j = 0; j < 2; j++){
      rString = "";
      rString.push_back(j + '0');
      for(int i = 1 ; i < message.length(); i++){
	char cZero = decodeChar(message, rString,i);
	if(cZero != '0' && cZero != '1')
	  { rString = "NONE";
	    break;
	  }
	else
	  rString.push_back(cZero);
      }
      int rStringLen = rString.length();
      if(rStringLen > 1 && rString!="NONE"){
	
	if( !(message[message.length()-1] == (rString[rStringLen-1] + rString[rStringLen-2] - '0'))){
	  cout<<endl<<rString<<"OP";
	  rString = "NONE";
	}
	
      }
      if(rStringLen == 1)
	{
	  if(message[0] > 1)
	     rString = "NONE";
	  else
	    {
	      if(message[0] == '0' && j ==1)
		rString="NONE";
	      if(message[0] == '1' && j ==0)
		rString="NONE";
	    }
	}
      rVector.push_back(rString);
      
    }
    return rVector;
    
  }

  char decodeChar(string message, string decoded, int pos){
    if(pos == 1) return  ((message[pos-1] - '0') - (decoded[pos-1] - '0') + '0');
    return ((message[pos-1] - '0') - (decoded[pos-2] - '0') - (decoded[pos-1] - '0') + '0');
  }

};