package prac;

public class pracset {

public static void main(String[] args) {
	// TODO Auto-generated method stub
	
	// Question-1
	int n = 4 ;
	for(int i=n;i>=1;i--)
	{
		for(int j=0;j<i;j++) {
		System.out.print("*");
		
		}
		System.out.println();
	}
	
	// Question-2
	int en = 10 ;
	int i=1;
	int sum = 0;
	
	while(i<=en) {
		
		sum = sum + (2*i);
		i = i + 1;
	}
	
	System.out.printf("Sum of first %d even numbers is %d",en,sum);
	System.out.println();
	
	// Question-3
	n = 3;
	i = 1;
	while(i<=10) {
		System.out.println(i*3);
		i= i + 1;
	}
	System.out.println();
	
	// Question-4
	n = 10;
	i = 10;
	while(i>=1) {
		System.out.println(i*n);
		i = i-1;
	}
	System.out.println();
	
	// Question-5
	n = 4;
	int fact = 1;
	while(n>0) {
		
		fact = fact*(n);
		n = n-1;
	}
	System.out.println(fact);
	System.out.println();
	
	// Question-6
	n = 4;
	for(i=0;i<n;i++) {
		for(int j=0;j<i+1;j++)
		{
		System.out.print("*");
		}
		System.out.println();
	}
	
	
	System.out.println();
	
	// Question-7
	n = 4;
	for(i=0;i<n;i++)
	{
		for(int j=0;j<i+1;j++)
		{
		System.out.print("*");
		}
		System.out.println();
	}
	
	n = 3;
	for(i=0;i<n;i++) {
		for(int j=n;j>i;j--) {
		System.out.print("*");
		}
		System.out.println();
	}
		
}

}