Matrix (2D Arrays)

Overview

A matrix in data structures usually means a 2D array: a grid of values arranged in rows and columns.

matrix

Movements

Action	Row	Column
Up	`-1`	`0`
Down	`+1`	`0`
Left	`0`	`-1`
Right	`0`	`+1`

Example:

Suppose we are at Row 2, Col 3 and want to move two steps up.
[
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 1, 0, 0],
  [0, 0, 0, 0, 0, 0],
];
Apply the Up move (-1, 0) twice: subtract 1 from the row two times while keeping the column the same.
[
  [0, 0, 0, 1, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
];
The new position is Row 0, Col 3.

Matrix (2D Arrays)

Overview

Movements

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