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CountSubstringOccurrences solution in Creative category for Count Substring Occurrences by arutyunyan
import re
def count_occurrences(main_str: str, sub_str: str) -> int:
return len(re.findall(fr'(?={sub_str})', main_str, flags=re.IGNORECASE))
if __name__ == '__main__':
print("Example:")
print(count_occurrences("hello world hello", "hello"))
# These "asserts" are used for self-checking
assert count_occurrences("hello world hello", "hello") == 2
assert count_occurrences("Hello World hello", "hello") == 2
assert count_occurrences("hello", "world") == 0
assert count_occurrences("hello world hello world hello", "world") == 2
assert count_occurrences("HELLO", "hello") == 1
assert count_occurrences("HELLO WORLD", "WORLD") == 1
assert count_occurrences("hello world hello", "o w") == 1
assert count_occurrences("apple apple apple", "apple") == 3
assert count_occurrences("apple Apple apple", "apple") == 3
assert count_occurrences("apple", "APPLE") == 1
print("The mission is done! Click 'Check Solution' to earn rewards!")
Oct. 31, 2023
