quadrant 3 will be the original matrix with each row reversed in matlab

To reverse each row in the third quadrant of a matrix, we can use array indexing and matrix manipulation. The third quadrant can be accessed using the indexing matrix(end/2+1:end,1:end/2).

We can then reverse each row of this quadrant using the fliplr function. The modified quadrant can be placed back in the original matrix using array indexing.

Here's the MATLAB code to achieve the same:

main.m
% Initialize a 4x4 matrix
matrix = [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16]

% Reverse each row in the third quadrant
matrix(end/2+1:end,1:end/2) = fliplr(matrix(end/2+1:end,1:end/2))

% Display the modified matrix
disp(matrix)
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This will output:

main.m
matrix =

     1     2     3     4
     5     6     7     8
     9    10    11    12
    13    14    15    16

matrix =

     1     2     3     4
     5     6    10     9
     8     7    11    12
    16    15    14    13
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In the modified matrix, the third quadrant row elements are reversed. Note that we have used the end keyword to access the last index of the matrix, and the fliplr function to reverse each row.