Smiths Detection Software Engineer Interview Questions and Answers

Simple embedded c coding round

Q1. Frequency of character
Ans. 
The question is asking about how often each character appears in a given string.
• Iterate through the string and count the frequency of each character using a hashmap.

• Return the hashmap with characters as keys and their frequencies as values.
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Normal Aptitude test for 1 hour

Q1. How to reverse an array?
Ans. 
To reverse an array of strings, iterate through the array and swap elements from start to end.
• Iterate through the array using two pointers, one starting from the beginning and the other from the end.

• Swap elements at the two pointers until they meet in the middle.

• Repeat until all elements are swapped and the array is reversed.
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Q1. Tell me about your strengths and weakness
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Q1. Explain OOPS and functional programming
Ans. 
OOPS focuses on objects and classes, while functional programming focuses on functions as first-class citizens.
• OOPS involves concepts like inheritance, encapsulation, and polymorphism.

• Functional programming emphasizes immutability, pure functions, and higher-order functions.

• In OOPS, data is typically stored in objects with methods to manipulate the data.

• Functional programming avoids side effects and mutable state.

• Examp...read more
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There was simple aptitude questions along with some C snippet

Q1. Difference between RISC and CISC?
Ans. 
RISC (Reduced Instruction Set Computing) has a smaller set of simple instructions, while CISC (Complex Instruction Set Computing) has a larger set of complex instructions.
• RISC processors have simpler instructions that can be executed in a single clock cycle, making them faster.

• CISC processors have more complex instructions that may require multiple clock cycles to execute.

• RISC architectures typically have a smaller chi...read more
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Q2. How ADC(Analog to Digital Converter) works?
Ans. 
ADC converts analog signals into digital data by sampling the input signal at regular intervals.
• ADC samples the input signal at regular intervals

• It quantizes the sampled values into discrete digital values

• The resolution of ADC determines the number of possible digital values

• Common types of ADC include successive approximation ADC and delta-sigma ADC
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Dsa + JavaScript related questions and outputs

Js related coding + easy dsa

Q1. Mostly about the projects you did earlier
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Q2. What do you focus on learning in future
Ans. 
I focus on learning new programming languages, technologies, and best practices to stay current in the industry.
• Learning new programming languages such as Python or Go

• Exploring emerging technologies like blockchain or machine learning

• Staying updated on best practices in software development such as Agile or DevOps

• Improving problem-solving skills through coding challenges and projects
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Coding questions related to logic correction and write a correct logic for wrongly given code

Q1. Coding question
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Q2. Coding question logic
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