1. 求 1-2+3-4+5.....99 的所有数的和
- n = 1
- s = 0
- while n<100:
- temp = n%2
- if temp == 0: #偶数
- s = s-n
- else:
- s = s+n
- n = n+1
- print(s)
2. 求 1-100 的所有数的和
- n = 1
- s = 0
- while n <101:
- s = s+n
- n = n+1
- print(s)
- # 一行代码搞定
- print (sum(range(101)))
3. 九九乘法表
- for i in range(1,10):
- for j in range(1,10):
- if i>=j:
- print("%s * %s == %s"%(j,i,i*j),end="\t")
- print("")
来源: http://www.bubuko.com/infodetail-2724521.html