题目71：编写input()和output()函数输入，输出5个学生的数据记录。
N = 3
#stu
# num : string
# name : string
# score[4]: list
student = []
for i in range(5):
student.append(['','',[]])
def input_stu(stu):
for i in range(N):
stu[i][0] =input('input student num:\n')
stu[i][1] =input('input student name:\n')
for j in range(3):
stu[i][2].append(int(input('score:\n')))
def output_stu(stu):
for i in range(N):
print( '%-6s%-10s' % ( stu[i][0],stu[i][1] ))
for j in range(3):
print( '%-8d' % stu[i][2][j])
if __name__ == '__main__':
input_stu(student)
print (student)
output_stu(student)nput student num:
1
input student name:
小红
score:
60
score:
40
score:
80
input student num:
2
input student name:
小明
score:
34
score:
34
score:
1
input student num:
3
input student name:
小王
score:
90
score:
89
score:
100
[['1', '小红', [60, 40, 80]], ['2', '小明', [34, 34, 1]], ['3', '小王', [90, 89, 100]], ['', '', []], ['', '', []]]
1 小红
60
40
80
2 小明
34
34
1
3 小王
90
89
100
Press any key to continue . . .
题目72：创建一个链表。
l=[ input("please input a number:\n") for i in range(5)]
print(l)please input a number:
1
please input a number:
2
please input a number:
3
please input a number:
4
please input a number:
5
['1', '2', '3', '4', '5']
Press any key to continue . . .
题目73：反向输出一个链表。
l=[ input("please input a number:\n") for i in range(5)]
o=l[::-1]
print(o)please input a number:
12
please input a number:
13
please input a number:
141
please input a number:
15
please input a number:
16
['16', '15', '141', '13', '12']
Press any key to continue . . .
题目74：列表排序及连接。
if __name__ == '__main__':
a = [1,3,2]
b = [3,4,5]
a.sort() # 对列表 a 进行排序
print (a)
# 连接列表 a 与 b
print( a+b)
# 连接列表 a 与 b
a.extend(b)
print( a)[1, 2, 3]
[1, 2, 3, 3, 4, 5]
[1, 2, 3, 3, 4, 5]
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题目75：放松一下，算一道简单的题目。
for i in range(5):
n = 0
if i != 1: n += 1
if i == 3: n += 1
if i == 4: n += 1
if i != 4: n += 1
if n == 3: print( 64 + i)67
Press any key to continue . . .
题目76：编写一个函数，输入n为偶数时，调用函数求1/2+1/4+...+1/n,当输入n为奇数时，调用函数1/1+1/3+...+1/n
def sum(n):
if n==1:
return 1
elif n==2:
return 1/2
elif n%2==0:
return (1/n+sum(n-2))
elif n%2==1:
return (1/n+sum(n-2))
n=int(input("input a number:\n"))
print(sum(n))input a number:
4
0.75
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题目77：循环输出列表
if __name__ == '__main__':
s = ["man","woman","girl","boy","sister"]
for i in range(len(s)):
print(s[i])man
woman
girl
boy
sister
Press any key to continue . . .题目78：找到年龄最大的人，并输出。请找出程序中有什么问题。
person = {"li":18,"wang":50,"zhang":20,"sun":22}
def find_max(dict):
max_age = 0
for key, value in dict.items():
if value > max_age:
max_age = value
name = key
print(name)
print(max_age)
find_max(person)wang
50
Press any key to continue . . .题目79：字符串排序。
if __name__ == '__main__':
str1 = input('input string:\n')
str2 = input('input string:\n')
str3 = input('input string:\n')
print(str1,str2,str3)
if str1 > str2 : str1,str2 = str2,str1
if str1 > str3 : str1,str3 = str3,str1
if str2 > str3 : str2,str3 = str3,str2
print('after being sorted.')
print(str1,str2,str3)input string:
TY
input string:
U
input string:
I
TY U I
after being sorted.
I TY U
Press any key to continue . . .题目80：海滩上有一堆桃子，五只猴子来分。第一只猴子把这堆桃子平均分为五份，多了一个，这只猴子把多的一个扔入海中，拿走了一份。第二只猴子把剩下的桃子又平均分成五份，又多了一个，它同样把多的一个扔入海中，拿走了一份，第三、第四、第五只猴子都是这样做的，问海滩上原来最少有多少个桃子？
start,end,m1=0,100,0
while m1==0:
end=end*2
for i in range(start,end):
m5=5*i+1
if m5%4==0:
m4=(m5/4)*5+1
if m4%4==0:
m3=(m4/4)*5+1
if m3%4==0:
m2=(m3/4)*5+1
if m2%4==0:
m1=(m2/4)*5+1
break
start=i
print("最少为：%d个桃子" % m1)最少为：3121个桃子
Press any key to continue . . .