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Chema Cortes Integer pow in scala

Created by Chema Cortes
potencia.scala
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def potencia(x: Double, n: Int): Double = {
    if (n == 0)
        1
    else if (n < 0)
        1 / potencia(x, -n)
    else if (n % 2 == 0)
        potencia(x, n / 2) * potencia(x, n / 2)
    else
        x * potencia(x, n - 1)
}

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