Test_cases

Case 1:

int grid[][] = new int[][]{
			{1,1,1,1,0},
			{1,1,1,1,1},
			{1,1,0,1,1},
			{1,0,1,0,1},
			{1,1,1,1,1}
		};
pair source = new pair(0,0);
pair destination = new pair(3,2);
	  
Case 2:
		
int grid[][] = new int[][]{
			{1,1,1,1,0},
			{1,1,1,1,1},
			{1,1,0,1,1},
			{1,0,1,0,1},
			{1,1,1,1,1}
		};
pair source = new pair(0,0);
pair destination = new pair(4,4);
	    
Case 3:	
int grid[][] = new int[][]{
			{1,1,1,1,1,1,1},
			{1,1,1,1,1,1,1},
			{1,1,1,0,1,1,1},
			{1,1,1,1,1,1,1},
			{1,0,1,0,1,1,1},
			{1,1,1,0,1,1,1},
			{1,1,1,1,1,1,1}
		};
pair source = new pair(2,1);
pair destination = new pair(5,4);

Case 4:

int grid[][] = new int[][]{
			{1,1,1,1,1},
			{1,1,1,1,1},
			{1,1,1,1,1},
			{1,1,1,0,0},
			{1,1,1,0,1}
		};
pair source = new pair(0,0);
pair destination = new pair(4,4);