What is heap tree in data structure?
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We know that Arrays are objects so why cannot we write strArray.length()?
What is difference between treeset hashset linkedhashset?
Which data structure is used to perform recursion?
What is the difference between hashset and hashtable?
Which sorting has less time complexity?
How do you find the index of an element in an arraylist?
What are the 3 types of variables?
What is inserting in data structure?
What is dangling pointer and how to avoid it?
How efficient is bubble sort?
Is hashmap get thread safe?
Differentiate between arraylist and linkedlist.