python-review01

# 1、使用while循环输出 1 2 3 4 5 6 8 9 10
count = 0
while count < 10:
    count += 1
    if count == 7:
        continue
    print(count)

# 2、输出 1-100 内的所有奇数
count = 0
while count < 100:
    count += 1
    if count % 2 == 1:
        print(count)

# 3、求1-2+3-4+5 ... 99的所有数的和
sum_i = 0
for i in range(0, 100):
    if i % 2 == 1:
        sum_i += i
    else:
        sum_i -= i
print(sum_i)

# 4、计算 1 - 2 + 3 ... + 99 中除了88以外所有数的总和
count = 0
sum_count = 0
while count < 99:
    count += 1
    if count == 88:
        continue
    if count % 2 == 0:
        sum_count -= count
    else:
        sum_count += count
print(sum_count)

# 5、计算 1 - 2 + 3 ... -99 中除了88意外所有数的总和
i = 0
j = -1
sum_i = 0
while i < 99:
    i += 1
    if i == 88:
        continue
    else:
        j = -j
        sum_i += i*j
print(sum_i)