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Deven
27 lines
661 B
Python
27 lines
661 B
Python
class Solution(object):
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def letterCombinations(self, digits):
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"""
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:type digits: str
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:rtype: List[str]
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"""
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numToLetters = {
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2: "abc",
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3: "def",
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4: "ghi",
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5: "jkl",
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6: "mno",
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7: "pqrs",
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8: "tuv",
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9: "wxyz"
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}
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combos = [""]
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for d in digits:
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comsToAdd = []
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for l in numToLetters[int(d)]:
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for combo in combos:
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comsToAdd.append(combo + l)
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combos = comsToAdd
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return [] if combos == [""] else combos
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