python作业答案

uce

作业一第一题答案

socre=int(raw_input())
if socre>=90:
    print 'A'
elif socre>60:
    print 'B'
else:
    print'C'

作业一第二题答案

for n in range(100,1000):
    i = n / 100
    j = n / 10 % 10
    k = n % 10
    if n == i ** 3 + j ** 3 + k ** 3:
        print n

作业一第三题答案

word=raw_input('pleas input a word:\n')
for i in word:
    print i+'\n'

作业二第一题答案

def fib(n):
    if n==1 or n==2:
        return 1
    return fib(n-1)+fib(n-2)

作业二第二题答案

s = raw_input('input a string:\n')
letters = 0
space = 0
digit = 0
others = 0
for c in s:
    if c.isalpha():
        letters += 1
    elif c.isspace():
        space += 1
    elif c.isdigit():
        digit += 1
    else:
        others += 1
print 'char = %d,space = %d,digit = %d,others = %d' % (letters,space,digit,others)

附加题答案

year = int(raw_input('year:\n'))
month = int(raw_input('month:\n'))
day = int(raw_input('day:\n'))
months = (0,31,59,90,120,151,181,212,243,273,304,334)
if 0 < month <= 12:
    sum = months[month - 1]
else:
    print 'data error'
sum += day
leap = 0
if (year % 400 == 0) or ((year % 4 == 0) and (year % 100 != 0)):
    leap = 1
if (leap == 1) and (month > 2):
    sum += 1
print 'it is the %dth day.' % sum