Jav G-queen -

The solution uses a backtracking approach to place queens on the board. The solveNQueens method initializes the board and calls the backtrack method to start the backtracking process.

The backtrack method checks if the current row is the last row, and if so, adds the current board configuration to the result list. Otherwise, it tries to place a queen in each column of the current row and recursively calls itself. jav g-queen

private boolean isValid(char[][] board, int row, int col) { // Check the column for (int i = 0; i < row; i++) { if (board[i][col] == 'Q') { return false; } } // Check the main diagonal int i = row - 1, j = col - 1; while (i >= 0 && j >= 0) { if (board[i--][j--] == 'Q') { return false; } } // Check the other diagonal i = row - 1; j = col + 1; while (i >= 0 && j < board.length) { if (board[i--][j++] == 'Q') { return false; } } return true; } } The solution uses a backtracking approach to place

The space complexity of the solution is O(N^2), where N is the number of queens. This is because we need to store the board configuration and the result list. Otherwise, it tries to place a queen in