CCZ's blog

github : https://github.com/CircleZ3791117 #!/usr/bin/env python # -*- coding: utf-8 -*- __author__ = 'circlezhou' ''' Description: Given a binary tree, find its maximum depth. The maximum depth is

github: https://github.com/CircleZ3791117 #!/usr/bin/env python # -*- coding: utf-8 -*- __author__ = 'circlezhou' ''' Description: Given an array of integers, every element appears twice except for

github: https://github.com/CircleZ3791117 #!/usr/bin/env python # -*- coding: utf-8 -*- __author__ = 'circlezhou' ''' Description: Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6

github: https://github.com/CircleZ3791117/ #!/usr/bin/env python # -*- coding: utf-8 -*- ''' Description: Given a non-negative integer num, repeatedly add all its digits until the result has only