Medtronic Intern Interview Questions and Answers

Q1. Find the second largest number in an array
Ans. 
Find the second largest number in an array.
• Sort the array in descending order

• Return the element at index 1
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Q2. Write a program to add two numbers without using the "+" operator at all
Ans. 
Program to add two numbers without using the '+' operator.
• Use bitwise operators like XOR and AND to perform addition without '+' operator.

• XOR the two numbers to get the sum without carry.

• AND the two numbers and left shift the result to get the carry.

• Repeat the process until carry becomes zero.
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Q3. What is mutable and immuatble data types give example
Ans. 
Mutable data types can be modified after creation, while immutable data types cannot be modified.
• Examples of mutable data types: lists, sets, dictionaries

• Examples of immutable data types: strings, tuples, frozensets
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Q4. What is the difference between dictionary list and tuple
Ans. 
A dictionary is an unordered collection of key-value pairs, while a list is an ordered collection of elements.
• Dictionaries are accessed by keys, while lists are accessed by indices.

• Dictionaries are mutable, while tuples are immutable.

• Dictionaries can have duplicate values, but not duplicate keys.

• Lists can contain elements of different data types, while tuples can contain elements of the same or different data types.
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Q5. Is a dictionary mutable
Ans. 
Yes, a dictionary is mutable in Python.
• A dictionary in Python can be modified by adding, updating, or deleting key-value pairs.

• The values associated with keys in a dictionary can be changed.

• Dictionaries are mutable objects, meaning they can be modified in-place.

• The 'update()' method can be used to add or update multiple key-value pairs at once.
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Q6. Write a program to show if a program is prime or not
Ans. 
A program to determine if a number is prime or not.
• A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

• To check if a number is prime, iterate from 2 to the square root of the number and check if any of them divides the number evenly.

• If any divisor is found, the number is not prime. Otherwise, it is prime.
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For data analyst you need to have good knowledge of DSA and coding.