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

Programming Exercises

Write a function to flatten a deeply nested list (with arbitrary levels of nesting).

Hard

Problem Statement

Write a function to flatten a deeply nested list (with arbitrary levels of nesting).

Sample Input

[[1, [2, [3, [4]], 5]]]

Sample Output

[1, 2, 3, 4, 5]

Limits

Time: 2s · Memory: 256 MB

Code Editor
00:00
def flatten_deeply_nested_list(): lst = [[1, [2, [3, [4]], 5]]] # Your code here return
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Input
[[1, [2, [3, [4]], 5]]]
Expected Output
[1, 2, 3, 4, 5]