# 1. 输出10行内容，每行的内容都是“*****”。

# num1=0

# while num1 < 10:

# num2 = 0

# while num2 < 5:

# print("*",end="")

# num2 += 1

# num1 += 1

# print()

# for i in range(10):

# for j in range(6):

# print("*",end="")

# print()

# 2. 输出10行内容，每行的内容都不一样，第1行一个星号，第2行2个星号，依此类推第10行10个星号。

# num21 = 0

# while num21 < 10:

# num22 = 0

# while num22 < num21:

# print("*",end="")

# num22+=1

# print()

# num21+=1

# for i in range(10):

# for j in range(10):

# print("*",end="")

# if i == j:

# print()

# break

# 3. 输出9行内容，，第1行输出1，第2行输出12，第3行输出123，以此类推，第9行输出123456789。

# num31 = 1

# while num31 <= 9:

# num32 = 1

# while num32 < num31:

# print(num32,end="")

# num32+=1

# print()

# num31+=1

# for i in range(1,10):

# for j in range(1,10):

# print(j,end="")

# if i == j:

# print()

# break

# 4. 计算10个99相加后的值并输出。

# num41 = 0

# sum1 = 0

# num42 = 99

# while num41 < 10:

# sum1 = sum1 + num42

# print(sum1)

# num41+=1

# sum2 = 0

# for i in range(10):

# sum2 = sum2 + 99

# print(sum2)

# 5. 计算从1加到100的值并输出。

# num51 = 1

# sum51 = 0

# while num51 <=100:

# sum51 = sum51 +num51

# print(sum51)

# num51+=1

# sum52 = 0

# for i in range(1,101):

# sum52 = sum52+i

# print(sum52)

# 6. 计算10的阶乘（1x2x3x4x5x6x7x8x9x10）

# num61 = 1

# sum_p = 1

# while num61 <=10:

# sum_p = sum_p*num61

# print(sum_p)

# num61+=1

# sum_p = 1

# for i in range(1,11):

# sum_p = sum_p*i

# print(sum_p)

# 7. 计算2的20次方。不允许用**和pow()

# num71 = 0

# sum_p1 = 1

# while num71 < 20:

# sum_p1 = sum_p1*2

# print(sum_p1)

# num71+=1

# print(2**20)

# sum_p1 = 1

# for i in range(20):

# sum_p1 = sum_p1*2

# print(sum_p1)

# 8. 计算从1到1000以内所有奇数的和并输出。

# num81 = 1

# sum81 = 0

# while num81 < 1000:

# sum81 = sum81 + num81

# print(sum81)

# num81+=2

# sum81 = 0

# for i in range(1,1000,2):

# sum81 = sum81+i

# print(sum81)

# 9. 计算从1到1000以内所有能被3或者17整除的数的和并输出

# num91 = 1

# sum91 = 0

# while num91 < 1000:

# if num91 % 3 ==0 or num91 % 17 == 0 :

# sum91 = sum91 + num91

# print(sum91)

# num91+=1

# sum91 = 0

# for i in range(1,1000):

# if i % 3 ==0 or i % 17 == 0 :

# sum91 = sum91 + i

# print(sum91)

# 10. 计算从1到1000以内所有能同时被3，5和7整除的数的和并输出

# num10 = 1

# sum10 = 0

# while num10 < 1000:

# if num10%3==0 and num10%5==0 and num10%7==0:

# sum10 = sum10+num10

# print(sum10)

# num10+=1

# sum10 = 0

# for i in range(1,1000):

# if i%3==0 and i%5==0 and i%7==0:

# sum10 = sum10+i

# print(sum10)