How do I start preparing for placement?
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Why are b trees used?
Explain the internal working of a hash map?
Why do we need a data structure?
What is the family trees and connection by clause?
What are linked lists good for?
Parenthesis are never needed in prefix or postfix expressions. Why?
Which is faster quick sort or merge sort?
What are the disadvantages of linear list?
What is max heapify?
What are the four types of variables?
Now you are given an array of a characters (both ASCII and Kanji) and, an index into the array. The index points to the start of some character. Now you need to write a function to do a backspace (i.e. delete the character before the given index).
Can treeset contain null?