http://www.dailycoding.com/Posts/enum_coversion_operations_int_to_enum_e...

进入了全新的领域，心里感觉还是没底。感觉也犯了些错误，现在才开始真正的考虑职业发展，要学习的东西很多，慢慢来吧。把犯的错误自己记录下，以后要常读...

Given a binary tree, determine if it is a valid binary search tree (BST)...

10/31/2016 Reading Thinking in JavaP23 - P36 13541 left 6% ...

1. Standerd Running time and memory 2. Types of Data Any type of data th...