How to automagically generate your Table View rows

ViewController.swift

class ViewController: UIViewController  {

let increment = 5
let maxPercentage = 100
	
}

extension ViewController: UITableViewDataSource {

	// First, we can use this to calculate the number of rows in the Table View.
	
	func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
		return (maxPercentage/increment)-1    // We subtract 1, since we aren't interested in duplicating the maxPercentage value.
	}
	
	// Then we inject data into the rows.
    
	func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
		
	// Now we use the percentage in each row to calculate the resulting weight.
        let perc = maxPercentage-((1+indexPath.row)*increment)
		
	// The rest is mainly formatting.
	
        let cell = UITableViewCell(style: UITableViewCellStyle.value1, reuseIdentifier: "cell")
        cell.textLabel?.text = "\(perc)%"
        cell.textLabel?.textColor = UIColor.gray
		
        let amount = (totalWeight.text! as NSString).doubleValue
        cell.detailTextLabel?.text = "\(Double(perc)/100 * Double(amount))"
        cell.detailTextLabel?.textColor = UIColor.black
		
        return(cell)
		
	}
	
	@IBAction func weightChanged(_ sender: Any) {
		tableView.reloadData()
	}

}