gourav

/*THIS PROGRAM IS MADE BY GOURAV GUPTA..............*/

import java.util.*;

public class Shelf {

public int minimumShelf(String line)
{
char ch[]=line.toCharArray();
int k=0;
for(int i='a';i!='z';i++)
{
for(int j=0;j {
if(ch[j]==i)
{
k=-1;
return k;
}
}
}


for(int i='A';i!='Z';i++)
{
for(int j=0;j {
if(ch[j]==i)
{
k++;
break;
}
}
}
return k;
}

public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter a string");
String str=sc.nextLine();
Shelf s=new Shelf();
System.out.println(s.minimumShelf(str));

}
}