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  1. #21
    lulzim is offline Member
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    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 ??

  2. #22
    lulzim is offline Member
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    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 ??

  3. #23
    yellowledbet is offline Senior Member
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    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

  4. #24
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    JosAH is offline Moderator
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    Quote Originally Posted by lulzim View Post
    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
    cenosillicaphobia: the fear for an empty beer glass

  5. #25
    lulzim is offline Member
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    if(exp) return true; here expr what could be ??
    return false

  6. #26
    lulzim is offline Member
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    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

  7. #27
    JosAH's Avatar
    JosAH is offline Moderator
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    Quote Originally Posted by lulzim View Post
    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
    cenosillicaphobia: the fear for an empty beer glass

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