Nomura Research Institute Financial Technologies India Software Developer Interview Questions and Answers

Q1. Data structure and algo
Ans. Hackerrank
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Q1. Concurrent modification exception Java multithreading java collection framework oops
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Q1. Oops concepts and projects
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Q2. Collections, multithreading
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It consist of 4 DSA ques and few quiz and opps concept based ques
1st was string based Medium level ques.
2nd was a ques based on 2 pointer
And other 2 was from Vector and Linked list easy ques

Q1. It was stock buy and sell ques on leetcode where we need to find Max profit and what day to buy and sell
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Q2. 2d array ques to print natural numbers in spiral form
Ans. 
Print natural numbers in spiral form using a 2D array.
• Create a 2D array with dimensions n x n.

• Initialize variables for row and column boundaries.

• Iterate through the array in a spiral pattern, filling in natural numbers.
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Q3. Hard level linked list ques
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Q1. The Egg Drop Problem: You are given a building with a certain number of floors and a limited number of eggs. The goal is to determine the highest floor from which you can drop an egg without it breaking, u...read more
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Q2. What is the significance of star behavior in a particular context?
Ans. 
Star behavior signifies the performance and scalability of systems, often used in distributed computing and network analysis.
• In distributed systems, star behavior indicates how well a system can handle increased loads without performance degradation.

• For example, in a star topology network, the central hub's performance is crucial as it connects all nodes.

• In software design, star behavior can refer to how components int...read more
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Exam to test reasoning and aptitude, and speed to answer them

Dsa question easy to medium level

Q1. Just culture fit question, and medium dsa questions
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Q2. Print pyramid from Fibonacci sequence
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Q3. Linked list sort
Ans. 
Sorting a linked list can be efficiently done using merge sort due to its O(n log n) time complexity.
• Use merge sort as it works well with linked lists due to its divide-and-conquer approach.

• Split the linked list into two halves using the slow and fast pointer technique.

• Recursively sort both halves and then merge them back together.

• Example: For a linked list 4 -> 2 -> 1 -> 3, the sorted list will be 1 -> 2 -...read more
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Q4. Design SQL tables for library management system
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Q5. Valid bracket dsa question
Ans. 
Check if a string of brackets is valid by ensuring every opening bracket has a corresponding closing bracket in the correct order.
• Use a stack to keep track of opening brackets. Example: For '({[]})', push '(', '{', '[' onto the stack.

• For each closing bracket, check if it matches the top of the stack. Example: For '}', pop '{' from the stack.

• If the stack is empty at the end, the brackets are valid. Example: '()[]{}' is ...read more
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Java , Spring, SQL questions asked without one data structure basic live coding question

Q1. What are your expectation to work with us
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Q2. How will you manage to improve with us
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Easy coding questions DSA

Q1. Reverse a linked list
Ans. 
Reverse a linked list by changing the pointers direction
• Start with three pointers: current, previous, and next

• Iterate through the linked list, updating the pointers to reverse the direction

• Update the head pointer to point to the new first node
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Q2. Find middle of linked list
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Q1. Pick from a basket of oranges
Ans. 
The question is asking to pick an orange from a basket.
• Carefully select a ripe orange without any bruises or blemishes

• Gently twist the orange off the stem to avoid damaging the fruit

• Check for firmness and weight to determine ripeness
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