Does treemap preserve order?
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Is collection a class or interface?
What are the types of algorithms?
What is a tech stack?
Are data structures important?
Why hashtable is faster than arraylist?
what is a balanced tree.
Differentiate between arraylist and linkedlist.
How do you sort an arraylist in descending order?
Define level of the tree?
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).
what is the need of data structure
Explain different methods in which you can traverse a tree?