distributeViewsEvenly.swift

    func distributeViewsEvenly(views: [UIView], axis: NSLayoutConstraint.Axis) -> UIView {
        let containerView = UIView()
        
        for (index, view) in views.enumerated() {
            let previousView = containerView.subviews.last
            let isLastView = index == views.endIndex - 1
            
            containerView.addSubview(view)
            
            view.snp.makeConstraints { make in
                switch axis {
                case .horizontal:
                    make.top.bottom.equalToSuperview()
                    
                    if index == 0 {
                        make.left.equalToSuperview()
                    } else {
                        make.left.equalTo(previousView!.snp.right)
                    }
                    
                    if isLastView {
                        make.right.equalToSuperview()
                    }
                case .vertical:
                    make.left.right.equalToSuperview()
                    
                    if index == 0 {
                        make.top.equalToSuperview()
                    } else {
                        make.top.equalTo(previousView!.snp.bottom)
                    }
                    
                    if isLastView {
                        make.bottom.equalToSuperview()
                    }
                }
            }
            
            if !isLastView {
                let spacerView = UIView()
                containerView.addSubview(spacerView)
                spacerView.snp.makeConstraints { make in
                    switch axis {
                    case .horizontal:
                        make.top.bottom.equalToSuperview()
                        make.left.equalTo(view.snp.right)
                        
                        if previousView != nil {
                            make.width.equalTo(previousView!)
                        }
                    case .vertical:
                        make.left.right.equalToSuperview()
                        make.top.equalTo(view.snp.bottom)
                        
                        if previousView != nil {
                            make.height.equalTo(previousView!)
                        }
                    }
                }
            }
        }
        
        return containerView
    }