# -*- coding: utf-8 -*-

def add(x, y, f):

return f(x) + f(y)

print add(-8, 2, abs)

print u'map/reduce函数练习题:'

print u'练习利用map()函把用户输入的不规范的英文名字，变为首字母大写，其他小写的规范名字。输入：["adam", "LISA", "barT"]，输出：["Adam", "Lisa", "Bart"]。'

print u'Python提供的sum()函数可以接受一个list并求和，请编写一个prod()函数，可以接受一个list并利用reduce()求积。'

print u'map练习题:'

oldNameList = ['adam', 'LISA', 'barT']

def my_name(old_name):

d = []

for index, value in enumerate(old_name):

if(index == 0):

d.append(value.upper())

else:

d.append(value.lower())

return ''.join(d)

#print my_name('adam')

print map(my_name, oldNameList)

print u'reduce练习题:'

numberList = [1,2,3,5,6]

def prod(*number):

def fn(x, y):

return x * y

return reduce(fn, *number)

print prod(numberList)

print u'map(函数，计算值) 与 reduce(函数, 计算值)'

print u'map练习题网络答案:'

def normalize(s):

if not isinstance(s, str):

raise TypeError('input is not string')

if len(s) < 2:

raise TypeError('The name is too short')

return (s[0].upper() + s[1:].lower())

print normalize('barT')

print map(normalize, oldNameList)

def ss(s1):

return s1[0].upper() + "ss" + s1[1:].lower()

print map(ss, oldNameList)

print u'filter()练习题:'

print u'请尝试用filter()删除1~100的素数。'

def prime(num):

result, n = True, 2

while (n < num):

if(num % n == 0):

result = False

n = n + 1

return result

print filter(prime, range(1,101))

print u'sorted()函数使用:'

def revered_cmp(x, y):

if (x < y):

return 1

elif (x > y):

return -1

else:

return 0

sort_number_list = [36,25,14,96,42]

print sorted(sort_number_list, reversed_cmp)

print sorted(sort_number_list)