1.数字の文字列の各桁の合計を見つけます
package itheima2;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String str = scanner.next();
int sum = 0;
for(int i=0;i<str.length();i++){
sum += str.charAt(i) - '0';
}
System.out.println(sum);
}
}
2.各桁の数値を出力します
package itheima2;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int num = scanner.nextInt();
String str = String.valueOf(num);
for(int i=0;i<str.length();i++){
System.out.println(str.charAt(i));
}
}
}