Given two integer arrays A and B, return the maximum length of an subarray that appears in both arrays.
Input:
A: [1,2,3,2,1]
B: [3,2,1,4,7]
Output: 3
Explanation:
The repeated subarray with maximum length is [3, 2, 1].- 1 <= len(A), len(B) <= 1000
- 0 <= A[i], B[i] < 100