Difference of Squares

Ringkasan Tantangan

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

Lihat Solusi Komunitas

The following are the top 3 community solutions by stars:

Solution 1 by @kacperk (⭐ 1) — View on Exercism
Solution 2 by @apainintheneck (⭐ 0) — View on Exercism
Solution 3 by @danw1976 (⭐ 0) — View on Exercism

Source: Exercism awk/difference-of-squares

💡 Lihat Solusi

BEGIN { FS = "," }
/square_of_sum/ { print square_of_sum($2) }
/sum_of_squares/ { print sum_of_squares($2) }
/difference/ { print square_of_sum($2) - sum_of_squares($2) }

function square_of_sum(n) {
    return (n * (n + 1) / 2) ^ 2
}

function sum_of_squares(n) {