python的题目？
1.将列表的元素按逆序重新存放。
my_list = [1, 2, 3, 4, 5]
my_list.reverse() # 将列表元素反转
print(my_list) # 输出反转后的列表
2.将列表中的偶数变成其平方值，奇数保持不变。
my_list = [1, 2, 3, 4, 5]
for i in range(len(my_list)):
if my_list[i] % 2 == 0: # 如果元素是偶数
my_list[i] = my_list[i] ** 2 # 将元素平方
print(my_list) # 输出更改后的列表
3.生成包含100个100以内的随机正整数的元组，统计每个数出现的次数。
生成包含100个100以内的随机正整数的元组，统计每个数出现的次数。
4.输入5X5的矩阵a，完成下列要求：a.输出矩阵ab.将第2行和第5行元素对调后，再重新输出a
# a.
a = [[1, 2, 3, 4, 5],
[6, 7, 8, 9, 10],
[11, 12, 13, 14, 15],
[16, 17, 18, 19, 20],
[21, 22, 23, 24, 25]]
for row in a:
print(row) # 每行输出矩阵
# b.
a[1], a[4] = a[4], a[1] # 将第2行和第5行元素对调
# c.
for row in a:
print(row) # 重新输出矩阵
5.创建由星期一到星期日的7个值组成的字典，输出键列表、值列表和键值列表。
days_of_week = {
"Monday": 1,
"Tuesday": 2,
"Wednesday": 3,
"Thursday": 4,
"Friday": 5,
"Saturday": 6,
"Sunday": 7
}
keys = list(days_of_week.keys()) # 将字典键转换为列表
values = list(days_of_week.values()) # 将字典值转换为列表
key_values = list(days_of_week.items()) # 将字典键值对转换为列表
print("Keys:", keys) # 输出键列表
print("Values:", values) # 输出值列表
print("Key-Values:", key_values) # 输出键值列表
6.输入10名学生的姓名和成绩，输出其最高分和最低分。要求使用字典存放学生的姓名和成绩。
my_dict = {}
for i in range(10):
name = input("Enter student name: ") # 输入学生姓名
score = int(input("Enter student score: ")) # 输入学生成绩
my_dict[name] = score # 将学生姓名和成绩存入字典
highest_score = max(my_dict.values()) # 获取最高成绩
lowest_score = min(my_dict.values()) # 获取最低成绩
print("Highest score: ", highest_score) # 输出最高成绩
print("Lowest score: ", lowest_score) # 输出最低成绩
7.随机产生10个[0，10]范围的整数，分别组成集合A和集合B。输出集合A、集合B的内容、长度以及他们的并集、交集和差集。
import random
A = set(random.sample(range(11), 10)) # 随机从0到10范围内选取10个不重复的整数，将其作为集合A的元素
B = set(random.sample(range(11), 10)) # 随机从0到10范围内选取10个不重复的整数，将其作为集合B的元素
print("Set A: ", A) # 输出集合A
print("Set B: ", B) # 输出集合B
print("Length of A: ", len(A)) # 输出集合A的长度
print("Length of B: ", len(B)) # 输出集合B的长度
print("Union of A and B: ", A.union(B)) # 输出集合A和集合B的并集
print("Intersection of A and B: ", A.intersection(B)) # 输出集合A和集合B的交集
print("Difference of A and B: ", A.difference(B)) # 输出集合A和集合B的差集
6.(1) 编程：将列表的元素按逆序重新存放。
def reverseList(list):
list.reverse()
return list
(2) 编程：将列表中的偶数变成其平方值，奇数保持不变。
def squareEvenNumber(list):
for i in range(len(list)):
if list[i] % 2 == 0:
list[i] = list[i] * list[i]
return list
(3) 编程：生成包含100个100以内的随机正整数的元组，统计每个数出现的次数。
import random
def countRandom():
nums = tuple(random.randint(0,100) for i in range(100))
count = {}
for i in nums:
if i not in count:
count[i] = 1
else:
count[i] += 1
return count
(4) 编程：输入5 X 5 的矩阵a，完成下列要求：
a. 输出矩阵a
b. 将第2行和第5行元素对调后，再重新输出a
def matrixChange(matrix):
row_2 = matrix[1]
row_5 = matrix[4]
matrix[1] = row_5
matrix[4] = row_2
return matrix
matrix = [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 12, 13, 14, 15], [16, 17, 18, 19, 20], [21, 22, 23, 24, 25]]
print('输出矩阵a：')
for row in matrix:
for col in row:
print(col, end=' ')
print()
matrix = matrixChange(matrix)
print('将第2行和第5行元素对调后，再重新输出a：')
for row in matrix:
for col in row:
print(col, end=' ')
print()
7.(1)
week_dict = {"Monday": 1, "Tuesday": 2, "Wednesday": 3, "Thursday": 4, "Friday": 5, "Saturday": 6, "Sunday": 7}
keys = list(week_dict.keys())
values = list(week_dict.values())
key_values = list(week_dict.items())
print(keys)
print(values)
print(key_values)
(2)
student_dict = {}
total = 0
lowest = 11
highest = 0
for i in range(10):
name = input("Please enter the student's name: ")
score = int(input("Please enter the student's score: "))
student_dict[name] = score
total += score
if score < lowest:
lowest = score
if score > highest:
highest = score
print("The highest score is", highest)
print("The lowest score is", lowest)
(3)
import random
A = set()
B = set()
for i in range(10):
A.add(random.randint(0, 10))
B.add(random.randint(0, 10))
print("The set A is", A)
print("The set B is", B)
print("The length of A is", len(A))
print("The length of B is", len(B))
print("The union of A and B is", A | B)
print("The intersection of A and B is", A & B)
print("The difference of A and B is", A - B)
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