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Discussion on: Daily Challenge #72 - Matrix Shift

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Melvin Yeo

In Python, using list splicing to shift the matrix and extract part of the flattened list to reconstruct the matrix.

def matrix_shift(matrix, shift_count):
    concat_list = [elem for row in matrix for elem in row]
    concat_list = concat_list[-shift_count:] + concat_list[:-shift_count]

    if shift_count == len(concat_list):
        return matrix

    height = len(matrix)
    width = int(len(concat_list) / height)

    result = []
    for i in range(0, height):
        result += [concat_list[(i * width):(i * width)+width]]

    return result