Weiss, Data Structures and Algorithm Analysis in Java, Chapters 2-5, 6-6.4, 6.9, 7, 9-9.3, 9.5; class lecture notes; MapReduce paper.

* Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).

Turkey’s relationship with NATO has strained under diplomatic missteps and Turkey’s interest in BRICS and ties with Russia and China. However, this strategic diversification should not alarm NATO ...

Given a non-empty binary tree, find the maximum path sum. For this problem, a path is defined as any sequence of nodes from some starting node to any node in the tree along the parent-child ...

I see it time and again in Google interviews or new-grad hires: The way data structures and algorithms — among the most important subjects in a proper computer science curriculum — are learnt is often ...