Given a 2D square matrix, print the Principal and Secondary diagonals.
Input: 4 1 2 3 4 4 3 2 1 7 8 9 6 6 5 4 3 Output: Principal Diagonal: 1, 3, 9, 3 Secondary Diagonal: 4, 3, 8, 6 Input: 3 1 1 1 1 1 1 1 1 1 Output: Principal Diagonal: 1, 1, 1 Secondary Diagonal: 1, 1, 1
For example, consider the following 4 X 4 input matrix.
A00 A01 A02 A03 A10 A11 A12 A13 A20 A21 A22 A23 A30 A31 A32 A33
The primary diagonal is formed by the elements A00, A11, A22, A33.
Condition for Principal Diagonal:
The row-column condition is row = column.
- The secondary diagonal is formed by the elements A03, A12, A21, A30.
Condition for Secondary Diagonal:
The row-column condition is row = numberOfRows - column -1.
In this method, we use two loops i.e. a loop for columns and a loop for rows and in the inner loop we check for the condition stated above.
Principal Diagonal: 1, 6, 3, 8, Secondary Diagonal: 4, 7, 2, 5,
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