Question

I have a string of letters that I’d like to split into all possible combinations (the order of letters must remain fixed), so that:

s = 'monkey'

becomes:

combinations = [['m', 'onkey'], ['mo', 'nkey'], ['m', 'o', 'nkey'] ... etc]

Any ideas?

Answer 1

def splitter(str):
    for i in range(1, len(str)):
        start = str[0:i]
        end = str[i:]
        yield (start, end)
        for split in splitter(end):
            result = [start]
            result.extend(split)
            yield result

combinations = list(splitter(str))

Note that I defaulted to a generator to save you from running out of memory with long strings.