这道题也很简单~主要是将输入转为字符串(存储大数,操作字符数组)
题意:
24 : 2 + 4 = 6 输出6
39 : 3 + 9 = 12 , 1 + 2 = 3 输出3
999: 9 + 9 + 9 = 27 , 2 + 7 = 9 输出9
Java代码如下:
import java.util.*; import java.io.*; public class Main{ public static void main(String[] arg){
Scanner scan = new Scanner(new BufferedInputStream(System.in));
String s;
while(true){
s=scan.next();
char[] cs = s.toCharArray();
if(cs[0] == '0'){
break;
}
if(cs.length==1){
System.out.println(s);
continue;
}
System.out.println(getSum(cs));
}
scan.close();
} static int getSum(char[] cs){
int sum = 0;
while(cs.length!=1){
sum = 0;
for(int i = 0 ; i != cs.length ; i ++ ){
sum = cs[i]-'0' + sum;
}
cs = String.valueOf(sum).toCharArray();
}
return sum;
}
}