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Solution following the constraint.
def count_substring(string: str, sub_string: str) -> int: count: int = 0 if len(string) < 1 or len(string) > 200: raise ValueError("Invalid string length") for i in range(len(string) - len(sub_string) + 1): if string[i:].startswith(sub_string): count += 1 return count
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Find a string
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Solution following the constraint.