liu044100

-(int)binaryGap:(int)N {
    NSString *string = @"";
    NSUInteger x = N;
    while (x>0) {
        string = [[NSString stringWithFormat: @"%lu", x&1] stringByAppendingString:string];
        x = x >> 1;
    }
    
    int longestBinaryGap = 0;
    int binaryGapLength = 0;

liu044100

```swift
protocol OutsideTileContainerDelegate {
    func outsideTileContainer(container: TileContainer)
}

class TileContainer: UIView {
    
    //MARK: OutsideTileContainerDelegate
    var delegate: OutsideTileContainerDelegate?
    

liu044100

class func createCustomItemView() -> CustomItemView? {
        let bundle = NSBundle(forClass: CustomItemView.self)
        let nib = UINib(nibName: "CustomItemView", bundle: bundle)
        if let view = nib.instantiateWithOwner(self, options: nil).first as? CustomItemView {
            return view
        }
        return nil
    }
    
    private class func addEqualConstraintsFromSubView(subView: UIView, toSuperView superView: UIView) {