[JAVA] BOJ11720 숫자의 합

 

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));		
String[] str = br.readLine().split("");
int sum = 0;
for (int i = 0; i < N; i++) {
	sum += Integer.parseInt(str[i]);
}
System.out.println(sum);

 

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));		
int N = Integer.parseInt(br.readLine());
String str = br.readLine();
int sum = 0;
for (int i = 0; i < N; i++) {
	sum += Integer.parseInt(Character.toString(str.charAt(i)));
}
System.out.println(sum);

 

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
br.readLine();
for (byte value : br.readLine().getBytes()) {
      sum += value - 48;
      // sum += (value-'0');
}
System.out.println(sum);

 

InputStream is = System.in;
while (is.read() != '\n');
int sum = 0;
int cur;
while ((cur = is.read()) != '\n') {
	sum += cur - 48;
}
System.out.println(sum);