Barclays Investment Bank Senior Software Developer Interview Questions and Answers

Three question were given , one was to implement singleton class, other one was easy array question and the third one was was also easy medium which was testing HashMap knowledge
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Q1. Asked to explain the answers you wrote in first round.
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Q2. Some conceptual questions of java like string pools, solid principles, etc.
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Q1. Sort of Managerial Technical round : Core Java
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Q2. Spring boot and about deployment tools.
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Q1. Why do want to join us?
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I am excited about the innovative projects and collaborative team environment at your company.
• Impressed by company's reputation in the industry

• Excited about the opportunity to work on cutting-edge projects

• Looking forward to collaborating with talented team members
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Q2. Have you heard of what your company does and at the end compensation discussion.
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Q1. OOPS concepts, .NET MVC, .NET CORE questions
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Q1. Technical questions related to security
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Simple algorithm question about sorting

Q1. Algorith question about quick sort
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Q2. Nlonn run time of the sort
Ans. 
The time complexity of the quicksort algorithm is O(n log n).
• Quicksort has an average time complexity of O(n log n).

• The best case time complexity of quicksort is O(n log n) when the pivot element divides the array into two equal halves.

• The worst case time complexity of quicksort is O(n^2) when the pivot element is the smallest or largest element in the array.
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Q1. - DSA questions (leetcode easy) - Javascript concepts
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Q1. With India Panel -LLD was asked
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Q1. WIth UK Panel Design round 1 - Threading concepts - Async Programming - 1 Design Question
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Q1. With Director Design round 2 - Questions on code quality - 1 design question - Behavioral questions
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Ms office,Core Java , Tally , C,

In my Opinion,view , If you ask me, As far as I can see/I am Concerned , It seems to me that , I think /feel/reckon/ belive , If you want my option , What we have to decide

It was around 2.5 hours which includes 2 coding ques and MCQ from DBMS, OS, Aptitude and Programming language (C++/Java)

Q1. It was purely resume based. He asked me about the projects.
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Q2. He also tested my knowledge on the technologies I have used in those projects.
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