Check for possible path in 2D matrix

Given a 2D array(m x n). The task is to check if there is any path from top left to bottom right. In the matrix, -1 is considered as blockage (can’t go through this cell) and 0 is considered path cell (can go through it).

Note: Top left cell always contains 0

Examples:

Input : arr[][] = {{ 0, 0, 0, -1, 0},
{-1, 0, 0, -1, -1},
{ 0, 0, 0, -1, 0},
{-1, 0, 0, 0, 0},
{ 0, 0, -1, 0, 0}}
Output : Yes
Explanation:


The red cells are blocked, white cell denotes the path and the green cells are not blocked cells.

Input : arr[][] = {{ 0, 0, 0, -1, 0},
{-1, 0, 0, -1, -1},
{ 0, 0, 0, -1, 0},
{-1, 0, -1, 0, 0},
{ 0, 0, -1, 0, 0}}
Output : No
Explanation: There exists no path from start to end.


The red cells are blocked, white cell denotes the path and the green cells are not blocked cells.



Method 1

Method 2

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