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In a binary tree, what is the maximum number of children a node can have?
What's the time complexity of finding a key in a hashmap?
Which Java design pattern is used to ensure that a class has only one instance and provides a global point of access to that instance?
Data Structures play a crucial role in programming. Which data structure would you use to implement a LIFO (Last-In-First-Out) behavior
What is the Java keyword for allocating memory to objects?
Which is the most appropriate data structure for reversing a word?
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