GiaDieu_pymihcm1708_ex3_4

def solve(data):
    newString1 = ''
    newString2 = ''
    data_reverse = data[::-1]
    for i in range(len(data_reverse)):
        if data_reverse[i] == '.':
            break
        newString1 = newString1 + data_reverse[i]
    newString1 = '.' + newString1
    newString2 = data[0:len(data)-len(newString1)]
    return newString2

def main():
    input_data1 = 'maria.data.mp9'
    input_data2 = '....slsslslsls...sls'
    print(solve(input_data1))
    print(solve(input_data2))


if __name__ == "__main__":
    main()