matrix isDiagonaL?

[lulzim]

I dont know how can u do it with only one loop ???? then please show us ur idea how can u do with only one loop ??

[lulzim]

for (int i= 0; i < matrix.length; i++)
for (int j= 0; j < matrix.length; j++) // assume a square matrix
if (i != j && matrix[i][j] != 0) return false;
return true;

what is the if condition for return true ??

[yellowledbet]

Wow, I should have looked up the definition of diagnol matrix and brush on my algebra, I was going by my own made up definition based on how I intrepreted your post. I am really sorry for misleading you. Regards

[JosAH]

for (int i= 0; i < matrix.length; i++)
for (int j= 0; j < matrix.length; j++) // assume a square matrix
if (i != j && matrix[i][j] != 0) return false;
return true;

what is the if condition for return true ??

That if-statement in the inner loop returns false if an element not on the main diagonal was not equal to zero. Your question doesn't make any sense.

kind regards,

Jos

[lulzim]

if(exp) return true; here expr what could be ??
return false

[lulzim]

My question is how to make an if condition that first return true i mean what is expression within if condition that returns true statement

[JosAH]

My question is how to make an if condition that first return true i mean what is expression within if condition that returns true statement

Please try again because your question doesn't make any sense (and it is a run-on sentense). b.t.w. there is no condition that returns true; if all the matrix elements are tested the matrix is a diagonal matrix and you can simply return true; no condition needed.

kind regards,

Jos