30-seconds-of-code/snippets/js/s/sum-of-numbers-until-n.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Sum of numbers until n	snippet	javascript	math	blue-flower	2020-10-22T20:24:30+03:00

Sums all the numbers between 1 and n.

• Use the formula (n * (n + 1)) / 2 to get the sum of all the numbers between 1 and n.

const sumN = n => (n * (n + 1)) / 2;

sumN(100); // 5050