# Euler Project #6: Difference of Square of Sums and Sum of Squares

The sum of the squares of the first ten natural numbers is, 1² + 2² + … + 10² = 385

The square of the sum of the first ten natural numbers is, (1 + 2 + … + 10)² = 55² = 3025

Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025 − 385 = 2640.

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

`// sumOfSquares: 338350// squareOfSums: 25502500// diff: 25164150`
`var sumOfSquares = 0var squareOfSums = 0`
`for x in 1...100{    sumOfSquares += x*x    squareOfSums += x}`
`sumOfSquaressquareOfSums *= squareOfSums`
`let diff = squareOfSums - sumOfSquares`