import java.util.Scanner; |
public class Main |
{ |
public static void main(String[] args) |
{ |
Scanner x = new Scanner(System.in); //构造一个SCANNER对象,其传入参数为SYSTEM.IN |
int n = x.nextInt(); //读取一个INT数值 |
int [] data = new int [ 20 ]; |
int i = 0 , max = 0 ; |
while (n != 0 ) |
{ |
data[i++] = n % 10 ; |
n = n / 10 ; |
} |
for ( int j = 0 ; j < i; j++) |
{ |
if (data[j] > max) |
max = data[j]; |
} |
System.out.println(max); |
} |
} |