What is collections singletonmap?
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Define adjacent nodes?
What is immutablelist?
What is array in data structure with example?
What is the most used data structure?
What is dynamic array how is it created?
What is difference between list and array list?
What is linked list ?
Why is null not allowed in concurrenthashmap?
What is a 2 dimensional array?
Why do we study data structures?
Can we use any class as map key?
What are the major data structures used in the hierarchical data model?