brainy.cpp

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>

int findClosing( int orders[], int time){
	
	int health = 1;
	int i = time;
	while (health != 0){
		i++;
		if (orders[i] == 91){
			health++;
		} else if(orders[i] == 93){
			health--;
		}
	}
	return i;
}

int findOpening(int orders[], int time){
	int health = 1;
	int i = time;
	while (health != 0){
		
		i--;
		if (orders[i] == 93){
			health++;
		} else if(orders[i] == 91){
			health--;
		}
	}
	return i;
}

int main(int argc, char **argv) {  	

	if (argc == 1){
		std::cout << "Need File!";
		return 1;
	} else {
		std::ifstream myfile;
    		myfile.open (argv[1]);
		std::vector<char> arr = std::vector<char>();
		std::cout << "Reading: " << std::endl;
		
 		while (!myfile.eof()) {
			char test;
			myfile >>  test ;
    			arr.push_back(test);;
 		}

		arr.pop_back();
		std::cout << std::endl  <<  "Finished reading!" << std::endl;

		int i = 1;
		for (char x : arr){
			if (x == 62){
				i ++;
			} else if( x == 60){
				i--;
			}	
		}

		std::vector<int>orders(arr.size());
    		std::copy(arr.begin(), arr.end() , orders.begin());
		std::cout << "memory size : " << i << std::endl;
		std::vector<int>mem(i * 266);
			
		i = 0;
		for ( int o = 0; o < arr.size(); o++ ){	
			if (orders[o] == 62){
				i++;
			} else if(orders[o] == 60) {
				
				if (i == 0){
					return 1;
				}else {
					i--;
				}
				
			} else if (orders[o] == 43){
				
				mem[i]++;

			} else if (orders[o] == 45){
				
				mem[i]--;

			} else if (orders[o] == 46){
				
				std::cout << char(mem[i]) ;

			} else if (orders[o] == 44){
				
				char temp ;
				std::cout << "Input at " << i << ": ";
				std::cin >> temp;
					
				mem[i] = int(temp);

			} else if (orders[o] == 91){
				if (mem[i] == 0){
					o = findClosing(orders.data(),o);	
				}			
			} else if (orders[o] == 93){
				if (mem[i] != 0){	
					o = findOpening(orders.data(),o);	
				}
			}
		}
		return 0;
	}
	return 1;
}