Min, Max, Enclosing rectangle on array of XY pairs of data

MinMaxOfTuple

func minsOf(pairs: [(Int, Int)]) -> (Int, Int) {
    return pairs.reduce((Int.max, Int.max)) {
        (($0.0 < $1.0) ? $0.0 : $1.0, (($0.1 < $1.1) ? $0.1 : $1.1))
    }
}

func maxsOf(pairs: [(Int, Int)]) -> (Int, Int) {
    return pairs.reduce((Int.min, Int.min)) {
        (($0.0 > $1.0) ? $0.0 : $1.0, (($0.1 > $1.1) ? $0.1 : $1.1))
    }
}

func midsOf(pairs: [(Int, Int)]) -> (Int, Int) {
    let mins = minsOf(pairs: pairs)
    let maxs = maxsOf(pairs: pairs)
    return (((maxs.0 - mins.0) / 2), ((maxs.1 - mins.1) / 2))
}

func rectOfGraph(pairs: [(Int, Int)]) -> CGRect {
    let maxs = pairs.reduce((Int.min, Int.min)) {
        (($0.0 > $1.0) ? $0.0 : $1.0, (($0.1 > $1.1) ? $0.1 : $1.1))
    }
    let mins = pairs.reduce((Int.max, Int.max)) {
        (($0.0 < $1.0) ? $0.0 : $1.0, (($0.1 < $1.1) ? $0.1 : $1.1))
    }
    return CGRect(x: mins.0, y: mins.1, width: maxs.0 - mins.0, height: maxs.1 - mins.1)
}

func rectOfGraph(pairs: [(Double, Double)]) -> CGRect {
    let maxs = pairs.reduce((-Double.greatestFiniteMagnitude, -Double.greatestFiniteMagnitude)) {
        (($0.0 > $1.0) ? $0.0 : $1.0, (($0.1 > $1.1) ? $0.1 : $1.1))
    }
    let mins = pairs.reduce((Double.greatestFiniteMagnitude, Double.greatestFiniteMagnitude)) {
        (($0.0 < $1.0) ? $0.0 : $1.0, (($0.1 < $1.1) ? $0.1 : $1.1))
    }
    return CGRect(x: mins.0, y: mins.1, width: maxs.0 - mins.0, height: maxs.1 - mins.1)
}

let arrayOfPairs = [(1, 2), (2, 7), (3, 8), (10, -1)]

print("Minimum (x,y) \(minsOf(pairs: arrayOfPairs))")
print("Maximum (x,y) \(maxsOf(pairs: arrayOfPairs))")
print("Middle (center) (x,y) \(midsOf(pairs: arrayOfPairs))")
print("Enclosing rectangle (x,y, width, height) \(rectOfGraph(pairs: arrayOfPairs))")

//prints:
//Minimum (x,y) (1, -1)
//Maximum (x,y) (10, 8)
//Middle (center) (x,y) (4, 4)
//Enclosing rectangle (x,y, width, height) (1.0, -1.0, 9.0, 9.0)