python：一些简单算法练习

1.输出1,2,3,4,5,6,8,9,10

n = 1
while n < 11:
    if n == 7:
        pass
    else:
        print(n)
    n += 1

 2.求1-100所有数的和

x = 1
y = 0
while x < 101:
    y = y + x
    x += 1
print(y)

 3.输出1-100内所有的奇数

x = 1
while x < 101:
    if x % 2 == 1:
        print(x)
    else:
        pass
    x += 1

 4.求1-2+3-4+5-6+7-.......+99-100的和

x = 1
y = 0
while x < 101:
    if x % 2 == 1:
        y += x
    else:
        y -= x
    x += 1
print(y)

 5.用户登录3次（3次重新登录的机会）

x = 0
while x < 3:
    name = input('小明的英文编码是：')
    if name == 'xiaoming':
        pass
    else:
        x += 1