Day of the Year

<-E 1154> Day of the Year

class Solution {
public:
    bool isLeap(int y){
		return (y % 4 == 0 && y % 100 != 0) || (y % 400 == 0);
	}

	int getMonth(int m,int y){
		if(m==1 || m==3 || m==5 || m==7 || m==8 || m==10 || m==12) return 31;
		if(m==2) return isLeap(y) ? 29 : 28;
		return 30;
	}

	int dayOfYear(string date) {
		int y = stoi(date.substr(0,4));
		int m = stoi(date.substr(5,2));
		int d = stoi(date.substr(8,2));

		int days = 0;
		days += d;

		for(int month = 1; month < m ; month++){
			days += getMonth(month,y);
		}

		return days;
	}
    
};