How Do you implement observer design pattern? Which design patterns do you know? Which are the collections interfaces? Given the fibonacci sequence array, sort the array with all the odd numbers at the begining and the non even numbers at the end. Don’t use any temp array.
Give a general overview of the Java memory model.
HashMap details
Counting sort using only one loop. No inner loop.
how to reverse a link list
difference between lock and synchronisation
object level lock vs class level lock
parallel gc vs concurrent gc
Core Java, Spring and Algorithms questions.
Write linked list? Algorithm to reverse a list
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