Problema
Convert text to title case: the first letter of every word becomes uppercase and the remaining letters lowercase. Words are separated by single spaces.
Implement title_case(text).
Input
text: Lowercase or mixed-case words separated by single spaces.
Output
Return the title-cased text.
Vincoli
0 ≤ length ≤ 10,000 (letters and spaces)
Esempi
Input:
text = "hello world"
Output atteso:
expected = "Hello World"Input:
std::string text = "hello world";
Output atteso:
std::string expected = "Hello World";Input:
string text = "hello world";
Output atteso:
string expected = "Hello World";Spiegazione
"hello" → "Hello" and "world" → "World".
Input:
text = "tHE qUICK fox"
Output atteso:
expected = "The Quick Fox"Input:
std::string text = "tHE qUICK fox";
Output atteso:
std::string expected = "The Quick Fox";Input:
string text = "tHE qUICK fox";
Output atteso:
string expected = "The Quick Fox";Spiegazione
Remaining letters become lowercase: "The Quick Fox".
Come affrontarlo
Prova prima da solo, poi apri un suggerimento alla volta.
Suggerimento 1
Split the text into words and treat each word independently.
Suggerimento 2
Uppercase the first character and lowercase the rest, then join the words back with spaces.
Suggerimento 3
Watch for empty input so you do not try to access a missing first character.
Complessità attesa
O(n) time, O(n) extra space
Riferimenti
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