Exercise 13 · Chapter: ListsOptional+50 XP
Checkerboard Text
Read a number n. Build an n by n grid where cells alternate between "X" and "O" in a checkerboard pattern. The top-left cell should be "X". Print each row by joining its items with spaces.
Hint: A cell at row r and column c is "X" when (r + c) is even.
Example:
Input:
3
Output:
X O X O X O X O X
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python
Output
Run your code to see the output here.