Ben*_*hak 1 haskell
我想在Haskell中这样做
for MyString = "ab"和n = 4结果应该>
MyString = "ab"
n = 4
["aaaa","aaab","aaba","aabb","abaa","abab","abba","abbb","baaa","baab","baba","babb","bbaa","bbab","bbba","bbbb"]
kqr*_*kqr 7
replicateM 4 "ab"
给出你要求的东西.你可以从中导入它Control.Monad.
Control.Monad
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