Problème
Draw a hollow square of side size: the first and last rows are all *, and the rows in between have * only at the two ends with spaces inside.
Implement hollow_square(size).
Input
size: The side length.
Output
Return the rows from top to bottom.
Contraintes
1 ≤ size ≤ 50
Exemples
Exemple 1
Entrée :
size = 4
Sortie attendue :
expected = ["****", "* *", "* *", "****"]Entrée :
long long size = 4;
Sortie attendue :
std::vector<std::string> expected = {"****", "* *", "* *", "****"};Entrée :
long size = 4;
Sortie attendue :
string[] expected = new string[] {"****", "* *", "* *", "****"};Explication
Rows are "****", "* *", "* *", "****".
Exemple 2
Entrée :
size = 1
Sortie attendue :
expected = ["*"]Entrée :
long long size = 1;
Sortie attendue :
std::vector<std::string> expected = {"*"};Entrée :
long size = 1;
Sortie attendue :
string[] expected = new string[] {"*"};Explication
A 1×1 square is a single "*".
Références
Ce défi a été adapté pour CodeUtility. Suivez l'énoncé et les contraintes ci-dessus.