Interview Practice 11 - Greatest Distance Between Two Nodes in Binary Tree

Question Get the greatest distance between two nodes in a binary tree. Assume links between nodes are bidirectional. Distance is defined as the amount of nodes connected along the path linked two nodes. Write an algorithm to calculate distance between two nodes. Take the figure at the right, the greatest…

Ssh with password saved

Ssh is a very convenient way to remotely command or control other devices. We use ssh to push commits to git server, to access remote server, and even to manipulate the content of our iphones and ipads. However it’s usually distributing to type your long and elusive password every…

Thanks for the referral from WinAndMac.com

Recently my blog has been referred by winandmac.com to show how to install the Samsung Kies on Lion. I have been subscribing winandmac.com for a long time and I am so grad to be linked by this international and informative blog. And the followings are the posts. =] English…

Handle unwanted character changes in Json for unicodes encoding in PHP

Json has been an efficient way to handle information and message exchanges in web programming. For example, I usually use PHP to connect MySQL and retrieve information, then display as Json. So a webpage can “AJAX” the displayed Json to create a dynamic view on itself. However, while the information…