Creating sub-lists

The function will divide the original list into a number of sub-lists according to the provided number N, each sub-list should have N elements.

Sample Code:

def arrNested(l,n):
# Enter your logic here...

Examples:

Input: [1,2,3,4,5,6],2
Output: [[1,2],[3,4],[5,6]]
Explanation: Each sub-lists have 2 elements.

Input: [1,2,3,4,5,6],3
Output: [[1,2,3],[4,5,6]]
Explanation: Each sub-lists have 3 elements.

Test Case	Input	Expected Output
Test Case 1	[1,2,3,4,5,6],2	[[1,2],[3,4],[5,6]]
Test Case 2	[1,2,3,4,5,6],3	[[1,2,3],[4,5,6]]

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