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import java.util.Scanner;
public class test {
public void mult()
{
int i,j;
int xdan, ydan;
int start, end;
Scanner scan = new Scanner(System.in);
while(true)
{
System.out.printf("몇 단 부 터 몇 단 까지 구구단을 출력할까요?(int,int)");
xdan=scan.nextInt();
ydan=scan.nextInt();
System.out.printf("어느 수 부터 어느 수 까지 곱할까요?(int,int)");
start=scan.nextInt();
end=scan.nextInt();
if(xdan!=0 || ydan!=0)
{
for(i=xdan; i<=ydan; i++)
{
for(j=start; j<=end; j++)
{
System.out.print(i + "*" + j + "=" + i*j);
System.out.print('\t');
}
System.out.println();
}
for(i=ydan; i<=xdan; i++)
{
for(j=start; j<=end; j++)
{
System.out.print(i + "*" + j + "=" + i*j);
System.out.print('\t');
}
System.out.println();
}
}
else
{
System.out.println("시스템 종료");
break;
}
}
}
public static void main(String[] args)
{
test call=new test();
call.mult();
}
}
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