python奇偶數求和

#求100內奇數和while\for..in循環
sum = 0
i = 1
while i <= 100:
    sum += i
    i += 2
print(sum)


sum = 0
for i in range(1,101,2):
    sum += i
print(sum)


#求100內偶數while\for..in循環
sum = 0
i = 0
while i <=100:
    sum += i
    i += 2
print(sum)


sum = 0
#range函數end時不包括當前數值，所有注意101.
for i in range(0,101,2):
    sum += i
print(sum)