get
Computes the Manhattan distance of the given state vis-à-vis the goal state.
This value is computed as the sum of the Manhattan (straight-line) distances of the positions in the given state vis-à-vis the positions in the goal state.
Return
Manhattan distance of the given state vis-à-vis the goal state.
Parameters
puzzleState
Current puzzle state (flattened into one dimension, following row-major order).
numColumns
Number of columns in the puzzle grid.
blankTileMarker
Indicator that the tile is blank.