Write a program to find out the sum of 1 to n number which take minimum time to solve it.

Question

Sanjay Goenka · Accepted Answer

I am writing a program in JavaScript and language.
function sum_of_numbers(n){
   return n * (n + 1) / 2;
}
console.log(sum_of_numbers(100));
Output:
5050

Amrita Bhattacharjee · Answer

The program to find out sum of 1 to n number in python will be the following:
def sum_of_numbers(n):
   return n * (n + 1) // 2
print(sum_of_numbers(100))

Rahul Roi · Answer

#include andlt;stdio.h>
int main(void) {
   int N, sum = 0, i = 1;
   scanf('%d', andN);
   sum = N*(Nand#43;1)/2;
   printf('Sum of first %d natural numbers is: %d', N, sum);
   return 0;
}
Output →
Input : 5
Output : Sum of first 5 natural numbers is: 15
and 
This program take O(1) time.and

forum

Write a program to find out the sum of 1 to n number which take minimum time to solve it.

Ravi Vishwakarma

Can you answer this question?

3 Answers

Liked By