Cuadro mágico Swift

cuadromagico.swift

func generateSquare(){
    
    var positionX = startingPositionX
    var positionY = 0
    
    square[positionY][positionX] = 1
    
    var currentPositionX = positionX
    var currentPositionY = positionY
    
    for j in 2...Int(pow(Double(size), 2)) {
        positionY -= 1
        positionX -= 1
        
        if positionX < 0 {
            positionX = square.count - 1
        }

        if positionY < 0 {
            positionY = square.count - 1
        }
        if square[positionY][positionX] == 0 {
            square[positionY][positionX] = j
        } else {
            positionX = currentPositionX
            positionY = currentPositionY + 1
            square[positionY][positionX] = j

        }
        currentPositionX = positionX
        currentPositionY = positionY
    }
    
    renderMagicSquare()
}

func renderMagicSquare(){
    for sq in square {
        print(sq)
    }
}

generateSquare()