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[Sync Iteration] gleam/difference-of-squares/1 #116

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[Sync Iteration] gleam/difference-of-squares/1 #116

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13 changes: 13 additions & 0 deletions solutions/gleam/difference-of-squares/1/src/difference_of_squares.gleam
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Original file line number Diff line number Diff line change
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import gleam/list
pub fn square_of_sum(n: Int) -> Int {
let x: Int = n * {n + 1} / 2
x*x
}

pub fn sum_of_squares(n: Int) -> Int {
n*{n + 1}*{2*n + 1} / 6
}

pub fn difference(n: Int) -> Int {
square_of_sum(n) - sum_of_squares(n)
}