Difference of Squares

Challenge Overview

Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.

Visit the difference-of-squares exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @fmarmol (⭐ 0) — View on Exercism
Solution 2 by @mike (⭐ 0) — View on Exercism
Solution 3 by @rect0x51 (⭐ 0) — View on Exercism

Source: Exercism nim/difference-of-squares

💡 View Solution

proc squareOfSum*(n: int): int =
    for i in 1..n:
        result+=i
    result *= result

proc sumOfSquares*(n: int): int = 
    for i in 1..n:
        result+=i*i

proc difference*(n: int): int =