i am trying to to do something like this

Below is my code:

-(id) init{
if( (self=[super init]) ) {

    bubbles_Arr = [[NSMutableArray alloc] initWithCapacity: 9];

    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"1",@"1",@"1",@"1",@"1",nil] atIndex:0];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"3",@"3",@"5",@"5",@"1",nil] atIndex:1];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"3",@"5",@"3",@"1",nil] atIndex:2];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"3",@"5",@"3",@"1",nil] atIndex:3];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"1",@"1",@"1",@"1",@"1",nil] atIndex:4];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"3",@"5",@"1",nil] atIndex:5];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:6];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:7];
    [bubbles_Arr insertObject:[NSMutableArray arrayWithObjects:@"5",@"5",@"5",@"5",@"5",nil] atIndex:8];


    NOCOLOR = @"-1";
    R = 9;
    C = 5;

    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(testting) userInfo:Nil repeats:NO];

}
return self;

}

-(void)testting{

// NSLog(@"dataArray---- %@",dataArray.description);

int startR = 0;
int startC = 0;
int color = 1 ;// red
// NSString *color = @"5";

//reset visited matrix to false.
for(int i = 0; i < R; i++)
    for(int j = 0; j < C; j++)
        visited[i][j] = FALSE;

//reset count
count = 0;
[self dfs:startR :startC :color :false];

NSLog(@"count--- %d",count);

NSLog(@"test---  %@",bubbles_Arr);

}

-(void)dfs:(int)ro:(int)co:(int)colori:(BOOL)set{

for(int dr = -1; dr <= 1; dr++)
    for(int dc = -1; dc <= 1; dc++)
        if((dr == 0 ^ dc == 0) && [self ok:ro+dr :co+dc]) // 4 neighbors
        {
            int nr = ro+dr;
            int nc = co+dc;

            NSLog(@"-- %d ---- %d",[[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] integerValue],colori);

            if ((([[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] integerValue]==1 || [[[bubbles_Arr objectAtIndex:nr] objectAtIndex:nc] isEqualToString:@"1"]) && !visited[nr][nc])) {
                visited[nr][nc] = true;
                count++;
                [self dfs:nr :nc :colori :set];
                if(count>2)
                {
                    [[bubbles_Arr objectAtIndex:nr] replaceObjectAtIndex:nc withObject:NOCOLOR];
                    [bubbles[nc+1][nr+1] setTexture:[[CCTextureCache sharedTextureCache] addImage:@"gray_tiger.png"]];
                }
            }
        }

}

-(BOOL)ok:(int)r:(int)c{
return r >= 0 && r < R && c >= 0 && c < C;
}

But it's only working for left to right,not working for right to left.
And it is also skipping first object.

Thanks in advance.