Problem
Count down from start to 1, then add "Liftoff!". Each number becomes one text entry.
Implement countdown(start).
Input
start: The number to start counting down from.
Output
Return the countdown as a list of strings, ending with "Liftoff!".
Constraints
0 ≤ start ≤ 1,000
Examples
Example 1
Input:
start = 3
Expected output:
expected = ["3", "2", "1", "Liftoff!"]Input:
long long start = 3;
Expected output:
std::vector<std::string> expected = {"3", "2", "1", "Liftoff!"};Input:
long start = 3;
Expected output:
string[] expected = new string[] {"3", "2", "1", "Liftoff!"};Explanation
"3", "2", "1", then "Liftoff!".
Example 2
Input:
start = 0
Expected output:
expected = ["Liftoff!"]Input:
long long start = 0;
Expected output:
std::vector<std::string> expected = {"Liftoff!"};Input:
long start = 0;
Expected output:
string[] expected = new string[] {"Liftoff!"};Explanation
There is nothing to count, so only "Liftoff!" remains.
References
This challenge is adapted for CodeUtility. Follow the statement and constraints above.