python基础试题

Posted 2020-12-06 记忆中的那条路

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打印三角行；------------
lines = int(input(‘请输入行数:‘))
for i in range(lines):
    for j in range(i):
        print("*",end= ‘ ‘)
    print()

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打印倒立三角行；
lines = int(input(‘请输入行数:‘))

for i in range(lines):
    j = 0
    while j < lines-i:
        print("*",end= ‘ ‘)
        j += 1
    print()
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# 打印九九乘法表---------------------
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i = 1
while i <= 9:
    j = 1
    while j <= i:
        print(‘%d * %d = %d‘ %(j,i,j*i),end= ‘ ‘)
        j += 1
    i += 1
    print()
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# # 求1000以内的水仙花数--------------------
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for i in range(100,1000):
    m = i // 100
    n = i // 10 % 10
    p = i % 10
    if (m ** 3) + (n ** 3) +(p ** 3) == i:
        print(i,end=‘,‘)
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# 求1-100以内所有偶数的和------------------
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sum = 0
i = 1
while i <= 100:
    if i % 2 == 0:
        sum += i
    i += 1
print(sum)


# 获取用户输入的任意数，判断其是否是质数?-----------------
num1 = int(input(‘请输入一个整数‘))
i = 2
while i < num1:
    if num1 % i == 0:
        print(num1,"不是质数")
        print(i,"*",num1//i,"是",num1)
        break
    i += 1
else:
    print(num1,"是质数")


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# n = int(input("请输入一个数字：")) # ------------

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j = 2
while j < n:
    if n % j == 0:
        print(n,‘不是质数‘)
        print(j,"*",n//j,‘是‘,n)
        break
    j += 1
else:
    print(n,"是质数")

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# 打印出100 以内的质数 ------------------
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num = []
j = 2
for i in range(2,100):
    for j in range(2,i):
        if i % j == 0:
            break
    else:
        num.append(i)
print(num)

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