a=[5,3,8,9,7,3,11]
n=len(a)- 1
cnt=0
for i in range(1,n):
if a[i]==a[i+1]-a[i-1]:
cnt+=1
elif a[i]>a[i+1]-a[i-1]:
cnt+=2
else:
cnt+=3
print(cnt)
执行该程序段后,变量 cnt 的值为( )
A.9 | B.10 | C.11 | D.12 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2