You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def rotate_90(arr):
    # Get the size of the array
    row = len(arr[0])
    col = len(arr)

    # Create an array to store the result
    result = []

    # Perform rotation
    for i in range(row):
        result.append([])
        for j in range(col-1, -1, -1): # reversed range
            result[i].append(arr[j][i])
    
    return result

if __name__ == "__main__":
    arr = [   [1, 2, 3, 4], 
             [5, 6, 7, 8], 
             [9, 10, 11, 12],
            [13, 14, 15, 16] 
        ]
    print(rotate_90(arr))
    
"""
[[13, 9, 5, 1], 
[14, 10, 6, 2], 
[15, 11, 7, 3], 
[16, 12, 8, 4]]
"""
user
[[13, 9, 5, 1], [14, 10, 6, 2], [15, 11, 7, 3], [16, 12, 8, 4]]
assistant