Problema
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!".
Vincoli
0 ≤ start ≤ 1,000
Esempi
Esempio 1
Input:
start = 3
Output atteso:
expected = ["3", "2", "1", "Liftoff!"]Input:
long long start = 3;
Output atteso:
std::vector<std::string> expected = {"3", "2", "1", "Liftoff!"};Input:
long start = 3;
Output atteso:
string[] expected = new string[] {"3", "2", "1", "Liftoff!"};Spiegazione
"3", "2", "1", then "Liftoff!".
Esempio 2
Input:
start = 0
Output atteso:
expected = ["Liftoff!"]Input:
long long start = 0;
Output atteso:
std::vector<std::string> expected = {"Liftoff!"};Input:
long start = 0;
Output atteso:
string[] expected = new string[] {"Liftoff!"};Spiegazione
There is nothing to count, so only "Liftoff!" remains.
Riferimenti
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