Top 10 Python Coding Interview Questions with Answers – Part 2

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Q11. Write a Python program to swap two numbers without using a third variable.

a = 10
b = 20

a, b = b, a

print(a, b)

Output: 20 10

Q12. Write a Python program to find the sum of digits of a number.

num = 12345
total = 0

while num > 0:
    total += num % 10
    num //= 10

print(total)

Output: 15

Q13. Write a Python program to check whether a number is an Armstrong number.

num = 153
total = sum(int(digit) ** 3 for digit in str(num))

if total == num:
    print("Armstrong Number")
else:
    print("Not Armstrong")

**Output:** Armstrong Number

Q14. Write a Python program to find common elements in two lists.

a = [1, 2, 3, 4]
b = [3, 4, 5, 6]

print(list(set(a) & set(b)))

Output: [3, 4]

Q15. Write a Python program to count the frequency of each character.

text = "python"
frequency = {}

for char in text:
    frequency[char] = frequency.get(char, 0) + 1

print(frequency)

Output: {'p': 1, 'y': 1, 't': 1, 'h': 1, 'o': 1, 'n': 1}

Q16. Write a Python program to find the smallest number in a list.

numbers = [45, 12, 78, 5, 23]

print(min(numbers))

Output: 5

Q17. Write a Python program to check whether two strings are anagrams.

a = "listen"
b = "silent"

if sorted(a) == sorted(b):
    print("Anagram")
else:
    print("Not Anagram")

Output: Anagram

Q18. Write a Python program to find the missing number in a sequence from 1 to n.

numbers = [1, 2, 3, 5, 6]
n = 6

missing = n * (n + 1) // 2 - sum(numbers)

print(missing)

Output: 4

Q19. Write a Python program to sort a list without using sort().

numbers = [5, 2, 8, 1, 3]

for i in range(len(numbers)):
    for j in range(i + 1, len(numbers)):
        if numbers[i] > numbers[j]:
            numbers[i], numbers[j] = numbers[j], numbers[i]

print(numbers)

Output: [1, 2, 3, 5, 8]

Q20. Write a Python program to find the sum of all even numbers in a list.

numbers = [1, 2, 3, 4, 5, 6]

total = sum(num for num in numbers if num % 2 == 0)

print(total)

Output: 12

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NEXT PART: Python Coding Interview Questions – Part 3

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5 Useful HTML, CSS and JavaScript Tricks Every Web Developer Should Know

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01. HTML – Open Link in New Tab

<a href="https://example.com" target="_blank">
  Visit Website
</a>

02. CSS – Center Any Element

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

03. CSS – Create a Smooth Hover Effect

button {
  transition: 0.3s ease;
}

button:hover {
  transform: scale(1.05);
}

04. JavaScript – Show an Alert

alert("Welcome to UPDATEGADH!");

05. JavaScript – Change HTML Content

<p id="demo">Hello World</p>

<script>
document.getElementById("demo").innerHTML =
  "Welcome to JavaScript!";
</script>

BONUS TIP: Use browser Developer Tools (F12) to inspect HTML, CSS and JavaScript errors.

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BCA and MCA Students – Important Exam Preparation Checklist

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01. DBMS
- DBMS vs RDBMS
- Primary Key and Foreign Key
- Normalization
- SQL Queries
- Joins and Subqueries

02. Operating System
- Process and Thread
- CPU Scheduling Algorithms
- Deadlock
- Memory Management
- Paging and Segmentation

03. Computer Networks
- OSI Model
- TCP/IP Model
- TCP vs UDP
- IP Addressing
- DNS and HTTP

04. Programming
- OOP Concepts
- Arrays and Strings
- Functions and Recursion
- Searching and Sorting
- Exception Handling

05. Software Engineering
- SDLC Models
- Waterfall Model
- Agile Methodology
- Software Testing
- Requirement Analysis

Exam Preparation Tips
1. Revise important definitions daily.
2. Practice previous-year question papers.
3. Write SQL queries by hand.
4. Practice programming without copying.
5. Prepare short notes for every unit.

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SAVE THIS CHECKLIST FOR YOUR EXAM PREPARATION

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10 Best AI Tools Every College Student Should Know in 2026

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01. ChatGPT – Learn concepts, solve doubts and practice interview questions.

02. Google Gemini – Research, learning assistance and study support.

03. NotebookLM – Summarize PDFs, create study guides and revise notes.

04. Claude – Understand long documents and improve writing.

05. Perplexity AI – Research topics with linked sources.

06. GitHub Copilot – Get coding suggestions and programming assistance.

07. Canva AI – Create presentations, posters and project designs.

08. Grammarly – Improve grammar, spelling and writing clarity.

09. Wolfram Alpha – Solve mathematical and scientific problems.

10. Gamma – Create presentations using AI.

Best Uses for Students
- Exam preparation
- Programming practice
- Project documentation
- Research and assignments
- Presentation creation
- Learning difficult concepts

TIP: Use AI as a learning assistant. Always verify answers and understand the concepts yourself.

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SAVE THIS LIST AND EXPLORE THESE AI TOOLS

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LATEST IT JOBS AND INTERNSHIPS – INDIA
4 November 2026 | LinkedIn Job Updates

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01. Python Developer Intern

Company: Medi Nex Workforce
Location: India
Work Mode: Remote
Duration: 1–3 Months
Stipend: Up to ₹15,000/month

Required Skills:
- Python
- Flask
- PostgreSQL
- SQL and Git

Eligibility: BCA, MCA, B.Tech and related students. Freshers can apply.

Apply Here:
https://in.linkedin.com/jobs/view/python-developer-entry-level-fresher-internship-python-flask-postgresql-at-medi-nex-workforce-4486840022

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02. Backend Developer Intern

Company: Crossing Infotech
Location: India
Work Mode: Remote
Duration: 1–3 Months
Stipend: ₹16,500/month

Required Skills:
- Backend Programming
- REST APIs
- SQL and Databases
- Node.js, Python, Java or PHP

Eligibility: BCA, MCA, Computer Science and IT students. Freshers welcome.

Apply Here:
https://in.linkedin.com/jobs/view/required-backend-developer-intern-freshers-welcome-at-crossing-infotech-4486041875

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03. MERN Stack Developer Intern

Company: Crossing Infotech
Location: India
Work Mode: Remote
Duration: 1–3 Months
Stipend: ₹16,500/month

Required Skills:
- MongoDB
- Express.js
- React.js
- Node.js
- JavaScript and REST APIs

Eligibility: BCA, MCA and related students. Freshers welcome.

Apply Here:
https://in.linkedin.com/jobs/view/opening-for-mern-stack-developer-intern-freshers-welcome-at-crossing-infotech-4486038981

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IMPORTANT NOTES
- These listings were found on LinkedIn.
- Check the latest application status before applying.
- Stipends and eligibility are as listed in the job descriptions.
- Never pay money for a job application.

SHARE WITH YOUR FRIENDS WHO ARE LOOKING FOR IT JOBS!

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5 Useful HTML, CSS and JavaScript Tricks Every Web Developer Should Know

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01. HTML – Open Link in New Tab

<a href="https://example.com" target="_blank" rel="noopener noreferrer">
  Visit Website
</a>

02. CSS – Center Any Element

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

03. CSS – Add Hover Animation

button {
  transition: transform 0.3s ease;
}

button:hover {
  transform: scale(1.05);
}

04. JavaScript – Toggle Dark Mode

document.body.classList.toggle("dark-mode");

05. JavaScript – Copy Text to Clipboard

navigator.clipboard.writeText("Hello Developer!");

BONUS TIP

Use Ctrl + Shift + I to open Developer Tools in Chrome and inspect your website.

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10 IMPORTANT DBMS VIVA QUESTIONS FOR BCA AND MCA STUDENTS

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Q1. What is DBMS?

A: DBMS stands for Database Management System. It is software used to store, manage and retrieve data.

Q2. What is a Primary Key?

A: A Primary Key uniquely identifies each record in a table.

Q3. What is a Foreign Key?

A: A Foreign Key connects two tables by referencing a key in another table.

Q4. What is SQL?

A: SQL stands for Structured Query Language. It is used to manage relational databases.

Q5. What is Normalization?

A: Normalization is the process of organizing database tables to reduce data redundancy.

Q6. What is a Candidate Key?

A: A Candidate Key is a minimal set of attributes that can uniquely identify a record.

Q7. What is a JOIN in SQL?

A: JOIN is used to retrieve related data from multiple tables.

Q8. What is the difference between DELETE and TRUNCATE?

A: DELETE removes selected rows or all rows, while TRUNCATE removes all rows from a table.

Q9. What is a NULL value?

A: NULL represents missing or unknown data in a database.

Q10. What is an Index in DBMS?

A: An Index helps retrieve records from a database table more efficiently.

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SQL QUERY CHALLENGE – TEST YOUR DBMS KNOWLEDGE

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Consider the following table:

Students

| ID | Name | Marks |
|---|---|---:|
| 1 | Rahul | 75 |
| 2 | Priya | 90 |
| 3 | Amit | 60 |
| 4 | Neha | 85 |
| 5 | Karan | 95 |

Question:

Which SQL query will display students who scored more than 80 marks?

A.

SELECT * FROM Students
WHERE Marks < 80;

B.

SELECT * FROM Students
WHERE Marks > 80;

C.

SELECT Name FROM Students;

D.

SELECT * FROM Students
ORDER BY Marks;

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Comment your answer: A, B, C or D.

Correct answer and explanation in the next SQL challenge!

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