110 Python Problems Solved | AI-Quiest

• I’m still working on this post.
• Problem 1: Variable Swap
• Problem 2: Even or Odd
• Problem 3: String Reverse
• Problem 4: Type Conversion

I’m still working on this post.

Code examples and explainations will be added soon. Check back later for the full version!

Problem 1: Variable Swap

Task: Write a Python program to swap the values of two variables without using a temporary variable.

Code:

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# Take input of two values
a = input("Enter 1st Value: ")
b = input("Enter 2nd Value: ")

# Print the values before swapping
print(f"\nSwapping:\nBefore : a = {a}, b = {b}")

# Swapping the values
a, b = b, a

# Print the values after swapping
print(f"After  : a = {a}, b = {b}")
 

Output:

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Enter 1st Value:  47
Enter 2nd Value:  29

Swapping:
Before : a = 47, b = 29
After  : a = 29, b = 47
 

Explanation: This program swaps the values of two variables using tuple unpacking. When a, b = b, a executes, Python first creates a tuple (b, a) internally and then unpacks it into the variables a and b. This allows both values to switch places without needing an extra temporary variable.

Problem 2: Even or Odd

Task: Write a Python program that takes an integer as input and prints whether it is even or odd.

Code:

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num = int(input("Enter a Number: "))

if num % 2 == 0:
    print(f"{num} is an Even number")
else:
    print(f"{num} is an Odd number")
 

Output:

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Enter a Number:  40
40 is an Even number
 

And if we give 37 as input:

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Enter a Number:  37
37 is an Odd number
 

Explanation: To determine whether a number is even or odd:

• We use the modulus operator (%) to find the remainder when dividing by 2.
• If the remainder is 0, the number is even.
• Otherwise, it is odd. This simple logic is implemented using an if-else condition.

Problem 3: String Reverse

Task: Write a Python function to reverse a given string and return the reversed string.

Code:

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user_input = input("Enter anything: ")

rev_str = ""

for char in user_input:
    rev_str = char + rev_str

print(f"Reverse string: {rev_str}")
 

Output:

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Enter a Word:  abcd 1234
Reverse string: 4321 dcba
 

Explanation:

• The program takes a string input from the user.
• An empty string rev_str is initialized to build the reversed version.
• In each loop, the current character (char) is added before the existing rev_str, reversing the order step by step.
• Finally, the reversed string is printed.

Note: If we mistakenly add the character after rev_str like rev_str = rev_str + char, the original order will remain unchanged.

Example (incorrect order):

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user_input = input("Enter a Word: ")

rev_str = ""

for char in user_input:
    rev_str = rev_str + char
print(f"Reverse string: {rev_str}")
 

Output:

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Enter a Word:  abcd 1234
Reverse string: abcd 1234
 

So, be careful with the order in the concatenation — char + rev_str is what actually performs the reversal.

Problem 4: Type Conversion

Task: Given a list of integers, write a Python program to convert each element of the list to a string.

Code:

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