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For the Questions Below, Consider the Following Representation of Grid

Question 57

Multiple Choice

For the questions below, consider the following representation of grid and the maze code from Chapter 11.
Grid:
1 1 1 1 1 1 0 0
0 0 1 0 0 1 0 0
0 0 1 0 0 1 1 0
0 0 1 1 0 0 1 0
0 0 0 1 1 0 0 0
0 0 0 0 1 1 1 1
Code:
public boolean traverse(int row, int column)
{
if (valid(row, column) )
{
boolean done = false;
grid[row][column] = TRIED;
if (row == grid.length - 1 && column == grid[0].length - 1)
done = True;
else
{
done = traverse(row + 1, column) ;
if (!done) done = traverse(row, column + 1) ;
if (!done) done = traverse(row - 1, column) ;
if (!done) done = traverse(row, column - 1) ;
}
if (done) grid[row][column] = PATH;
}
return done;
}
Assume valid returns True if row and column are >= 0 and <= the grid's row length or column length and the entry at this position = = 1. And assume TRIED = 3 and PATH = 7
-Assume at some point in processing, grid's row 0 has become 3 3 3 1 1 1 0 0. Which direction will next be tried?


A) up
B) down
C) left
D) right
E) none, the recursion ends at this point

Correct Answer:

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