Keep First Characters
Sometimes you need to remove repeats while keeping the original order of the data. The function delete_reoccurring_characters receives a string s. Walk through it from left to right and keep only the first appearance of each character. Skip every later occurrence of a character you have already seen.
Примеры
Ввод
["aaabcccc"]Вывод
"abc"Ввод
["abcabc"]Вывод
"abc"Ввод
["hello"]Вывод
"helo"Нужно реализовать
def delete_reoccurring_characters(s: str) -> str:
Теги
stringsset
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1
Input
"aaabcccc"Expected
"abc"2
Input
"abcabc"Expected
"abc"3
Input
"hello"Expected
"helo"4
Input
""Expected
""5
Input
"aaabccccaaabcccc"Expected
"abc"6
Input
"AAABCCCC"Expected
"ABC"Focus radio
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