Calculate factorial of a number(using java)
// factorial of a number
5!= 5*4*3*2*1 =120
class factorial
{
public static void main(String args[])
{
int no=10,fact=1;
for(int i=1; i<=no ; i++)
{
fact=fact*i;
}
System.out.println(fact);
}}
How to print 9,99,8,89,7,79....
/ common way to write int a=9,n=10 ; // n value you can take anything for(int i=1;i<=n;i++) { if(i%2==1) { System.out.print(a); } else { System.out..print(a*10+9); a--; }}
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