python算法双指针问题：两个有序数组的合并

from django.test import TestCase
import copy
# Create your tests here.

a_list = [3, 5, 8, 45, 78, 2345]
b_list = [2, 5, 8, 23, 46, 89, 3235]
a_len = 0
c_list = a_list.copy()
for b_len in range(0, len(b_list)):
    while a_len < len(a_list):
        if b_list[b_len] <= a_list[a_len]:
            c_list.insert(a_len + b_len, b_list[b_len])
            break
        else:
            a_len += 1
    else:
        c_list = c_list + b_list[b_len:]
        break
print(c_list)
# ============分割线，上面是书上的，下面是自己的实现===================
a_len = 0
for b_item in b_list:
    while a_len < len(a_list):
        if b_item <= a_list[a_len]:
            a_list.insert(a_len, b_item)
            break
        a_len += 1
    else:
        a_list.append(b_item)
print(a_list)

[2, 3, 5, 5, 8, 8, 23, 45, 46, 78, 89, 2345, 3235]
[2, 3, 5, 5, 8, 8, 23, 45, 46, 78, 89, 2345, 3235]

Process finished with exit code 0