Need help on matrix.

[oubless]

Originally Posted by sania21

Hi!!

i have been working on the code given by you but,the loop startrow is moving downwards by adding 1,now i am trying to work on upper rows but i am unable to decrement the rowcount bcoz initialy the value of startrow is set to 0,so it is not getting decremented any solution for this?
Please let me know,or just give me some hint so that i could proceed.

Try starting from the last row and decrement its value...
this:

for(int startRow = 0; startRow < matrix.length; startRow++)

to this:

//note it starts from the last (matrix.length-1 not matrix.length)
for(int startRow = matrix.length-1 ; startRow >= 0 ; startRow--)

BTW are sure you want to change startRow and not currentRow values or both?

[sania21]

Hi!!
i was sure i had to start from startrow only not the current row,bcoz first i did
page work then i was trying it,but finally i got my program of inverse using pivot method that is generalised,i have tried it on many matrix of different dimension its giving the inverse,but one condition is the input should be a valid matrix,what i mean by this is whose inverse exist.
Anyways thanks for your kinda help

[oubless]

I studied those in the university but it was some time ago and it seems I have forgotten most of it .

[sania21]

Hey!! oubless

now i have completed my program on matrix but still some work is remaining
in that concern i need ur advice,since i have to work on large matrix i have to take input from excel sheet but in order to give the output of matrix that is inverse what must be used?
i had first thought of output in word document but when we get output there its nice but later if we use the output can say copy it to some other document its order may change ..............so i want to use some Swing component instead so can you suggest me some swing component?

thanks in advance..........

[oubless]

JTable:
JTable (Java 2 Platform SE 5.0)
How to Use Tables (The Java™ Tutorials > Creating a GUI with JFC/Swing > Using Swing Components)

[sania21]

Thanks once again!!!!!!!!!!!