Convert non-adjacent ones to zero and return this array. If a number not found on the outside line is not connected with other ones on the outside line, it is converted to zero.
Class name: Corner Methods:
- findCorner(): Detect corners
- findNeighbor(): Detect all neighbor (With Recursion)
- checkUp(): Check upper neighbor
- checkLeft(): Check left neighbor
- checkRight(): Check right neighbor
- checkDown(): Check down neighbor
- processArray(): Convert 1 to 0
