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Java Junior Interview Questions
4,081 java junior interview questions shared by candidates
Given a number, n, decide if n is a power of 2. Afterwards he asked me about the complexity of the solution and if I rather keep (Hash, List, etc) all the numbers that are power of 2 (32 ints) instead of performing the calculation.
Given an array, return the 2nd biggest number in one run.
Basic java understanding
What is HashMap .Explain with exampole
Distinct vs. group by. Difference
Spring Boot vs. Spring MVC
Singleton is increasingly considered an anti-pattern. Why?
What types of joins do you know?
Finding common elements in three arrays
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