1 '''
2 1
3 1, 1
4 1, 2, 1
5 1, 3, 3, 1
6 1, 4, 6, 4, 1
7 '''
8 # def YangHui (num = 10):
9 # LL = [[1]]
10 # print([1])
11 # for i in range(1,num):
12 # # LL.append([(0 if j== 0 else LL[i-1][j-1])+ (0 if j ==len(LL[i-1]) else LL[i-1][j]) for j in range(i+1)])
13 # print([(0 if j== 0 else LL[i-1][j-1])+ (0 if j ==len(LL[i-1]) else LL[i-1][j]) for j in range(i+1)])
14 #
15 # print(YangHui (num = 10))
16
17 def fun(n):
18 N = [1]
19 t = 0
20 while t < n:
21 yield N
22 t = t + 1
23 N.append(0)
24 N = [N[i-1] + N[i] for i in range(len(N))]
25
26 for i in fun(6):
27 print(i)
28 #在每次调用next()的时候执行,遇到yield语句返回,再次执行时从上次返回的yield语句处继续执行。
# 循环加每一项 如: 1,2,1,0 1+0,1+2,2+1,0+1