Given an n-ary tree, return the level order traversal of its nodes' values. Nary-Tree input serialization is represented in their level order traversal, each group of children is separated by the null ...

Open-source distributed OLAP database and powerful SaaS counterpart shine with plug-in indexes, signature tunable star-tree ...

Check two given binary trees are identical or not. Assuming any number of tweaks are allowed. A tweak is defined as a swap of the children of one node in the tree. There is no two nodes with the same ...