Python基礎編程題目29

遞歸寫出“abc”全排列

def bitStr(n,s):
    '''
    遞歸計算abc的所有排列可能。
    :param n:
    :param s:
    :return:
    '''
    if n==1:
        return s
    return [digit + bits for digit in bitStr(1,s) for bits in bitStr(n-1,s)]

if __name__ == "__main__":
    print(bitStr(3,"abc"))