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python
a year ago
574 B
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def most_frequent_char_replace(n, str_input, x): if n == 0: print("NULL") return char_count = {} max_freq_char = "" max_freq = 0 for char in str_input: if char in char_count: char_count[char] += 1 else: char_count[char] = 1 if char_count[char] > max_freq or (char_count[char] == max_freq and char < max_freq_char): max_freq_char = char max_freq = char_count[char] modified_str = str_input.replace(max_freq_char, x) print(modified_str)
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