What is difference between map and hashmap?
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Describe the types of data structures?
Can you sort a string?
What is a Queue? Explain its operation with example?
Define linked lists?
How will you represent a linked list in a graphical view?
Can arraylist have null values?
What are the major data structures used in the hierarchical data model?
Why sorting is done?
Does hashmap sort automatically?
Can you have an arraylist of arrays?
What is sorting and its types?
Explain the Queue