13 lines
386 B
Python
13 lines
386 B
Python
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class Solution:
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def combine(self, n: int, k: int) -> List[List[int]]:
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rlt = []
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def comb(l, cur, k):
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if k == 0:
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rlt.append(l)
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return
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for i in range(cur, n + 1):
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tmp_l = l.copy()
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tmp_l.append(i)
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comb(tmp_l, i + 1, k - 1)
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comb([], 1, k)
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return rlt
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