Several data structures && algorithm surface question "three" (update)

This is my third side of the question summary.

To see the previous content, please visit:

http://zhweizhi.blog.51cto.com/10800691/1763237

(Some data structure && algorithm surface question "One" (update completed))

http://zhweizhi.blog.51cto.com/10800691/1775780

(Some data structure && algorithm surface question "Two" (update completed))

In addition, all of my brush problem codes are here:

Https://github.com/HonestFox/BrushQuestion

I will gradually improve the difficulty here.

After all, contact and solve their own problems is the real purpose of the brush problem,

have been in their own comfort zone brush questions, meaning is not much.

It's like writing a 1W line Hello World still doesn't learn to program as well.

Several data structures && algorithm surface question "three" (update)