Python Coding Challange - Question with Answer (01021025)

 Explanation:

1. Initialization:

nums = [1, 2, 2, 3]

We create a list nums containing 4 numbers: [1, 2, 2, 3]

These numbers will be the input for the next mapping step

2. Mapping / Transformation:

map(lambda x: x%2, nums)

lambda x: x%2 is a small function that returns the remainder when a number is divided by 2

Applied to each element:

1 % 2 → 1

2 % 2 → 0

2 % 2 → 0

3 % 2 → 1

Result after map → [1, 0, 0, 1]

3. Removing Duplicates using set():

set([1, 0, 0, 1])

set() removes all duplicate values and keeps only unique elements

[1, 0, 0, 1] → {0, 1}

4. Printing the Result:

print(res)

res now contains the set {0, 1}

Console output →

{0, 1}

Key Concepts:

map() → Applies a function to each element in a sequence

lambda function → A small anonymous function used directly with map

set() → Removes duplicates and keeps only unique values

Probability and Statistics using Python