#第一题
# -*- coding: utf-8 -*-
def normalize(name):
    x=name[0].upper()+name[1:].lower()
    return x  
# 测试:
L1 = ['adam', 'LISA', 'barT']
L2 = list(map(normalize, L1))
print(L2)

#第二题
# -*- coding: utf-8 -*-
from functools import reduce
def prod(L):
    return reduce(lambda x,y:x*y , L )

print('3 * 5 * 7 * 9 =', prod([3, 5, 7, 9]))
if prod([3, 5, 7, 9]) == 945:
    print('测试成功!')
else:
    print('测试失败!')

#第三题
# -*- coding: utf-8 -*-
from functools import reduce

#法一：使用split()函数
def str2float(s):    
    def char2num(x):
      Digits={'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}
      return Digits[x]
    x1=s.split('.')[0]
    x2=s.split('.')[1]
    a1=reduce(lambda x,y:10*x+y, map(char2num, x1))
    a2=reduce(lambda x,y:0.1*x+y, map(char2num, x2[::-1]))
    return a1+0.1*a2

#法二：使用replace函数
def str2float(s):   
    def char2num(x):
      Digits={'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}
      return Digits[x]
    for i in range(len(s)):
      if s[::-1][i]=='.':
        spot=i
    a=s.replace('.','')
    return reduce(lambda x,y:10*x+y, map(char2num, a))/10**spot

print('str2float(\'123.456\') =', str2float('123.456'))
if abs(str2float('123.456') - 123.456) < 0.00001:
    print('测试成功!')
else:
    print('测试失败!')