Code work in Python?

Question

Python

Hello, help me understand the code.

A = [1, 2, 5, 8, 9, 3, 4, 0, 7, 6]

j = 5

while A[j] < A[j-1]:

    A[j], A[j-1] = A[j-1], A[j]

    j -= 1

print(A)

Specifically, what does this piece of code do?
A[j], A[j-1] = A[j-1], A[j]

Answer 1

Swaps values ​​in adjacent positions.