Notes
- gyan_pelo
- Problem statement is to find if in a set of2D_array if a word exist in continuation, only the cell that are vertical or horizontal can be considered, so Number of Islands problem considers 8 adjacent blocks and this problem will consider only 4 adjacent blocks.

- https://leetcode.com/problems/word-search/solutions/3895510/no-nonsense-clean-dfs-code/
- i and j should have length less than the length of array dimensions.

- In the solution given, the values around the axis have been marked with numbers between -1 to 1.

- Another alternate, https://leetcode.com/problems/word-search/solutions/27811/my-java-solution/