Kirusa Ai Ml Engineer Interview Questions and Answers

Q1. Find nth elements from last in linked list
Ans. 
Use two pointers to find the nth element from the end of a linked list.
• Use two pointers, one moving n steps ahead of the other

• When the first pointer reaches the end, the second pointer will be at the nth element from the end
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Q2. Difference between hashmap and concurrent hashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe and allows concurrent access.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if accessed by multiple threads simultaneously.

• ConcurrentHashMap allows concurrent access by multiple threads without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple th...read more
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30min duration C coding 10 questions asked

1hr duration interviewer will be giving some random C questions to code

Q1. System programming
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Q2. System design, os concepts
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Q1. Technical Interview + Coding
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Q1. Technical Interview
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They will give 3 questions

Q1. There will be technical round after finishing of exam
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Q2. And HR round also will be same time of Technical
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Q1. Mostly Scenario based
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Q2. 1 coding quest, then Detail discussion on each and every topic
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Q1. Find all the permutation of the Array?
Ans. 
Permutations of an array of strings are all possible arrangements of the elements.
• Use recursion to generate all permutations.

• Swap elements to create different permutations.

• Base case: when only one element is left, add the permutation to the result.

• Example: Array ['A', 'B', 'C'] has permutations ['ABC', 'ACB', 'BAC', 'BCA', 'CBA', 'CAB'].
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Q2. Find the largest number in an Array without DS and loop in Java 8?
Ans. 
Use Java 8 Stream API to find the largest number in an array of strings without using additional data structures or loops.
• Convert the array of strings to a stream of integers using map() and parseInt()

• Use reduce() with Math::max to find the largest number in the stream
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Questions were asked

Dsa dp, graphs and many more questions from arrays and linked list were asked

Q1. What do you know about rf
Ans. 
RF stands for radio frequency, which is a type of electromagnetic wave used in various communication systems.
• RF is used in wireless communication systems such as Wi-Fi, Bluetooth, and cell phones.

• RF signals can be transmitted through antennas and can travel long distances.

• RF spectrum is regulated by government agencies to prevent interference between different communication systems.
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