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Assumptions : land and water space is represented as a matrix with m rows and n columns.
matrix[i][j] = 'x' represents land and matrix [i][j] = ' ' (space) represents water.
As the for loop in the main function goes in row major order, we only need to check four adjacent nodes instead of all 8.
- nviladkar February 20, 2016Time complexity : O(m*n)
Space complexity : O(m*n)