47 lines
1.2 KiB
Markdown
47 lines
1.2 KiB
Markdown
# Difference of Squares
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Welcome to Difference of Squares on Exercism's Elixir Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
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The square of the sum of the first ten natural numbers is
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(1 + 2 + ... + 10)² = 55² = 3025.
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The sum of the squares of the first ten natural numbers is
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1² + 2² + ... + 10² = 385.
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Hence the difference between the square of the sum of the first ten natural numbers and the sum of the squares of the first ten natural numbers is 3025 - 385 = 2640.
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You are not expected to discover an efficient solution to this yourself from first principles; research is allowed, indeed, encouraged.
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Finding the best algorithm for the problem is a key skill in software engineering.
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## Source
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### Created by
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- @petehuang
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### Contributed to by
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- @andrewsardone
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- @angelikatyborska
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- @Cohen-Carlisle
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- @dalexj
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- @devonestes
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- @jinyeow
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- @kytrinyx
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- @lpil
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- @neenjaw
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- @parkerl
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- @rubysolo
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- @Scientifica96
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- @sotojuan
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- @Teapane
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- @waiting-for-dev
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### Based on
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Problem 6 at Project Euler - https://projecteuler.net/problem=6 |