28 lines
859 B
Python
28 lines
859 B
Python
def histogram(test):
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"""Given a string representing a space separated lowercase letters, return a dictionary
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of the letter with the most repetition and containing the corresponding count.
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If several letters have the same occurrence, return all of them.
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Example:
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histogram('a b c') == {'a': 1, 'b': 1, 'c': 1}
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histogram('a b b a') == {'a': 2, 'b': 2}
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histogram('a b c a b') == {'a': 2, 'b': 2}
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histogram('b b b b a') == {'b': 4}
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histogram('') == {}
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"""
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if not test or test.strip() == '':
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return {}
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letters = test.split()
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counts = {}
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for letter in letters:
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counts[letter] = counts.get(letter, 0) + 1
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if not counts:
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return {}
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max_count = max(counts.values())
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return {letter: count for letter, count in counts.items() if count == max_count} |