Practice Real Company Assessment Patterns • Latest 2025–2026 Mock Tests

Programming Exercises

Write a function to generate all combinations of k elements from a given list of n elements.

Hard

Problem Statement

Write a function to generate all combinations of k elements from a given list of n elements.

Sample Input

[1, 2, 3, 4], 2

Sample Output

[(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)]

Limits

Time: 2s · Memory: 256 MB

Code Editor
00:00
def combinations_of_k(): lst = [1, 2, 3, 4] k = 2 # Your code here return
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Input
[1, 2, 3, 4], 2
Expected Output
[(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)]