Which data structure is needed to convert infix notations to
post fix notations?
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Does hashset maintain order?
Why is quicksort not stable?
How does a treemap work?
What do you mean by Syntax Error
an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
What are control structures?
Is hashmap fail safe?
How null key is handled in hashmap?
How do you empty an arraylist?
Is array a data type?
What is the difference between arraylist and array?
Why is selection sort used?
Can I provide array size dynamically?
where do you use double linked list?
Define primary data structures?
