cell.backgroundColor = [UIColor colorWithRed:(10 * indexPath.row)/255.0 green:(20 * indexPath.row)/255.0 blue:(30 * indexPath.row)/255.0 alpha:1.0f];
cell.backgroundColor = [UIColor colorWithRed:(10 * indexPath.row)/255.0 green:(20 * indexPath.row)/255.0 blue:(30 * indexPath.row)/255.0 alpha:1.0f];
本文标题：CollectionViewCell & TableViewCe
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