Maximum XOR subarray

Given an array of integers of size N find subarray with maximum xor. A subbarray is a contiguous part of array.

Example 1:

Input:
N = 4
arr[] = {1,2,3,4}
Output: 7
Explanation: 
The subarray {3,4} has maximum xor 
value equal to 7.

Your Task:
You don’t need to read input or print anything. Your task is to complete the function maxSubarrayXOR() which takes the array arr[], its size N as input parameters and returns the maximum xor of any subarray.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

Constraints:
1 <= N <= 105
1 <= arr[i] <= 105

from functools import reduce
def sub_lists_XOR(arr):
    ans = -1
    for i in range(len(arr) + 1):
        for j in range(i):
            ans = max(ans,reduce(lambda x, y: x ^ y, arr[j: i]))
    return ans
l1 = [1, 2, 3,4]
print(sub_lists_XOR(l1))

#######--------or--------#######

def maxSubarrayXOR(arr):
    N = len(arr)
    ans = -1
    for i in range(N):
        xor = 0
        for j in range(i, N):
            xor = xor ^ arr[j]
            ans = max(ans, xor)
    return ans
l1 = [1, 2, 3,4]
print(maxSubarrayXOR(l1))