What do you mean by back edge?
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What is a spanning tree in data structure?
What are skew trees? For a tree with 4 nodes draw all possible binary? Generalize for n nodes how many binary trees can be drawn?
What is the difference between binary tree and binary search tree?
which is the simplest file structure? (Sequential, indexed, random)
Is char array null terminated?
How do you insert a new item in a binary search tree?
Define articulation point?
What is a bubble sort and how do you perform it?
What is time complexity of sorting algorithms?
What is the difference between hashmap and linkedhashmap?
What data type is enum?
How to initialize Dictionary using collection initialize?