用python实现插花实例

# 插花

# 定义变量a,b

a = [1,2,3,4,5,6,7,8,9,10]

b = [11,12,13,14,15,16,17,18,19,20]

# 定义变量i

i = 0

# 假设ys在a里面

for ys in a :

# 把ys从a中一个一个拿出来，插到b里面,括号里面第一个参数是步长，第二个是要插入的元素

b.insert(i,ys)

# 定义步长

i += 2

# 输出b

print(b)

# 一个列表里面，前后值互换

# 定义列表a

a = [1,2,3,4,5,6,7,8,9,10]

# 定义i，为循环条件初始值

i = 0

# 循环判断条件

while i < len(a)-1 :

# 前后值互换

a[i],a[i+1] = a[i+1],a[i]

# 步长

i += 2

# 输出a,[2, 1, 4, 3, 6, 5, 8, 7, 10, 9]

print(a)

插花

a = [1,2,3,4,5,6,7,8,9,10]

i = 0

while i < len(a)-1 :

t = a[i]

a[i] = a[i+1]

a[i+1] = t

i += 2

print(a)