# 标准化英文单词
L1 = ['adam', 'LISA', 'barT']

def normalize(name):
    return map(lambda s: s[0].upper() + s[1:].lower(), name)

print(list(normalize(L1)))

# 求积
def prod(L):
    return reduce(lambda x, y: x * y, L)

print('3 * 5 * 7 * 9 =', prod([3, 5, 7, 9]))

# 转化字符串为浮点数
def str2float(s):
    pointPos = len(s) - 1
    for c in s:
        if c == '.':
            break
        pointPos = pointPos - 1

    divide = 1;
    while pointPos > 0:
        divide = divide * 10
        pointPos = pointPos - 1

    ret = reduce(lambda x, y: x * (10 if y != 0 else 1) + y, map(lambda x: 0 if x == '.' else int(x), s))
    return ret / divide

print(str2float('123.45'))