Skip to content

Collapse sidebar

Workspace

90 Days of Looping

Keep growing

Your progress stays on this device. Export a backup in Settings.

Settings JCoderLevel 1 · 0 XP

ıWorkspace90 Days of Looping

Learning Path Practice problems Code visualizer About Iwons

© 2026 Iwons

Desk Path Problems Review

Day 5: Countdown

DAY 5 OF 90 · Count it

Countdown

Easy90 Days of Looping

Inputs

n is a whole number from 0 to 20.

Your tasks

Create an empty list numbers.
Use a loop that counts downward. Add n, then n - 1, and so on, down to and including 1.
Complete countdown so it returns numbers. Return it, do not print it.

Example

With n = 5, countdown returns [5, 4, 3, 2, 1].

Rules

If n is 0, return an empty list.

Test data

TEST DATA 1: n is 5

TEST DATA 2: n is 0

Practice focus

Loops that count, add up and multiply. Every algorithm starts here: a counter, a total and a stopping point.

Day 4 Day 6 All 90 days

Loading your practice…

Preparing your workspace…