Code giving wrong output

#1

So, the code that is explained in the video is giving a wrong output in case of 4by5 matrix

The output is 12 13 in end whereas it should be 13 12. I have used the same code that is given in video, can you please help me out.
This problem is occurring after taking care of the corner cases.

#2

can you plz share the link of your code?
i will check

#3

Link of Code: https://goonlinetools.com/snapshot/code/#julb2q4i0adk0dtzh5aem

#4

if(endCol > startCol)
here use equal to also
if(endCol >= startCol)

here is modified Code