public void makeRealMap(int k){
		for(int i = 1; i < realMap.length; i++){
			realMap[i] = 0.0;
		}
		Random ran = new Random();
		for(int i = 0; i < k; i++){
			int total = 0;
			for(int j = 0; j < numOfDice; j++){
				while(true){
					int eye = ran.nextInt(NUM_OF_EYE+1);
					if(eye != 0){
						total += eye;
						break;
					}
				}
			}
			realMap[total]++;
		}
		//(result of each total eye)/ times
		for(int i = 1; i < realMap.length; i++){
			realMap[i] = realMap[i]/k;
		}
	}