Character Frequency

Count every character in text except spaces. Report each distinct character once as "character:count", sorted by character code (so uppercase letters come before lowercase).

Implement character_frequency(text).

Input

text: The text to count (ASCII characters).

Output

Return the list of "character:count" entries.

Restricciones

0 ≤ length ≤ 10,000

Ejemplos

Entrada:
text = "hello"

Salida esperada:
expected = ["e:1", "h:1", "l:2", "o:1"]

Entrada:
std::string text = "hello";

Salida esperada:
std::vector<std::string> expected = {"e:1", "h:1", "l:2", "o:1"};

Entrada:
string text = "hello";

Salida esperada:
string[] expected = new string[] {"e:1", "h:1", "l:2", "o:1"};

Entrada:
text = "a a A"

Salida esperada:
expected = ["A:1", "a:2"]

Entrada:
std::string text = "a a A";

Salida esperada:
std::vector<std::string> expected = {"A:1", "a:2"};

Entrada:
string text = "a a A";

Salida esperada:
string[] expected = new string[] {"A:1", "a:2"};

Referencias

Este reto está adaptado para CodeUtility. Sigue el enunciado y las restricciones indicadas arriba.

• GWU CS1111 Introduction to Software Development - lab sequence