根据参数将数组分成5个不同的数组

def split_array(arr, k):
    n = len(arr)
    m = n // k
    result = [[] for _ in range(k)]
    
    for i in range(k):
        start = i * m
        end = start + m
        result[i] = arr[start:end]
    
    return result

# 示例用法
arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
k = 5
result = split_array(arr, k)
print(result)

[[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12], [13, 14, 15, 16], [17, 18, 19, 20]]