Python阶段复习 - part 1 - Python基础练习题

2024-08-28 19:10:05

1、实现1-100的所有的和

# 方法1：

 sum = 0

 for i in range(1,101):

     sum += i

 print(sum)

 # 方法2：

 num1 = int(input('请输入起始数字'))

 num2 = int(input('请输入末尾数字'))

 sum = (num1 + num2) * num2 / 2

 print(int(sum))

2、实现1-500所有奇数的和

sum = 0

for i in range(1,501):

     _,result = divmod(i,2)

     if not result:

         sum += i

 print(sum)

3、实现1!+2!+3!+4!...+20!的结果

sum = 0

result = 0

for i in range(1,21):

    if i == 1:

        sum = i

    else:

        for j in range(1,i+1):

            if j == 1:

                result = 1

            else:

                result *= j

    sum += result

print(sum)

4、对指定的list进行排序[2,32,43,453,54,6,576,5,7,6,8,78,7,89]

# sorted()拷贝排序

li = [2,32,43,453,54,6,576,5,7,6,8,78,7,89]

new_li= sorted(li)

print(li)  # 原列表不变

print(new_li)

# sort()是原地排序

li = [2,32,43,453,54,6,576,5,7,6,8,78,7,89]

li.sort()

print(li)  # 直接对原列表进行修改

　　

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