Can arraylist contain duplicates?
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How many types of arrays are there?
What is data and data structure?
What is linked list in data structure?
What is the use of data structure in real life?
Can we use Generics with the array?
Does treemap sort automatically?
Define depth and height of a tree?
Define data type and what are the types of data type?
What is the logic to reverse the array?
Does hashmap allow duplicate keys?
What is dynamic array with example?
What are the types of map?