What is the Role of push() and pop() method?
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How many types of data structure are there?
Can we add duplicate keys in a hashmap? What will happen if we attempt to add duplicate values?
What is 1d array?
Define an equivalence relation?
What is the Difference between sax and dom parser?
What is the difference between hashmap and arraylist?
Is binary tree balanced?
What is copyonwritearraylist?
Why we use arraylist instead of linked list?
Does concat mutate array?
Define internal nodes?
How can I study data structures and algorithms?