How can you add an item to the beginning of the list?
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Is complete binary tree?
Is hashmap an array?
Can binary tree have 1 child?
Write code for reversing a linked list.
How do you increase the capacity of an arraylist?
What is different between array and list?
What method is used to place a value onto the top of a stack?
Does hashmap sort automatically?
Can a tree be empty?
Does treemap allow null keys?
Define an algorithm. What are the properties of an algorithm? What are the types of algorithms?
How do we search a specific element in an array?