Given a matrix of ‘O’ and ‘X’, replace 'O' with 'X' if surrounded by 'X' - GeeksforGeeks

Given a matrix of 'O' and 'X', replace 'O' with 'X' if surrounded by 'X' - GeeksforGeeks

Given a matrix of 'O' and 'X', replace 'O' with 'X' if surrounded by 'X'

Given a matrix where every element is either 'O' or 'X', replace 'O' with 'X' if surrounded by 'X'. A 'O' (or a set of 'O') is considered to be by surrounded by 'X' if there are 'X' at locations just below, just above, just left and just right of it.

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