Custom UICollectionViewDelegateFlowLayout Swift 4.2

I have a project where customer needs to customize the collection photos. So i searched on the internet and i coulnd't find what i want. So i decided to create my own UICollectionViewDelegateFlowLayout. I share the codes for you guys. I hope it helps.

The result will be like this :


Share you the important code that you need to implement. Just ask me if you don't understand.

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