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30-seconds-of-code/snippets/sumN.md
Isabelle Viktoria Maciohsek 5cb69e3c5c Update snippet descriptions
2020-10-22 20:24:30 +03:00

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sumN math,beginner

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