Countdown Timer Using a While Loop

Easy ⏱ 8 min 76% acceptance ★★★★★ 4.6

Write a function countdown(n) that returns a list counting down from n to 1, followed by the string "Liftoff!" as the final element, built using a while loop.

Examples

Example 1

Input

countdown(3)

Output

[3, 2, 1, "Liftoff!"]

Explanation

Counts down then appends the liftoff message.

Example 2

Input

countdown(1)

Output

[1, "Liftoff!"]

Explanation

Immediately reaches 1 then liftoff.

Constraints

n is a positive integer.

Topics

Loopswhile loop

Companies

SwiggyZomato

Hints

Hint 1

Use a `while n > 0:` loop, appending n then decrementing.

Hint 2

Append "Liftoff!" once the loop finishes.

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