What is a directed graph?
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In rdbms, explain what is the efficient data structure used in the internal storage representation?
Given M x N matrix with sorted elements row wise and column wise, find elements?
What is the difference between array and stack?
Is array immutable?
Tell me what is quick sort?
Can hashmap have same key?
Does linked list allow duplicates?
What are splay trees?
Define heap?
What does list clear do?
Explain exception filter?
What sort does arrays sort use?