Question

WAP TO PRINT THE FOLLOWING PATTERN
i) S=1! +2!+3!+…………..n!
( IN JAVA )
*Can anyone EXPLAIN the pattern and Give a solid answer .
​

Answer 1

Langauge:

JAVA

Program:

import java.util.Scanner;

public class Program

{public static void main(String[] args)

{Scanner scan = new Scanner (System.in);

int n = scan.nextInt();

int sum=0;

for(int i=1;i<=n;++i){

int product= 1;

for(int j= 1;j<=i;++j){product = product* j;}

sum= sum+ product;}

System.out.println(sum); }}

Logic:

• Take n input, initialise sum.
• Run a loop for number of terms and initialise product.
• Run a nested loop to get the factorials.
• Add the factorials per loop to sum.
• Print final sum.

Attachment:

(Output for n = 4)

PS. sorry for the gaseous answer T_T