Find the maximum value and its location from a matrix using two nested loops

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Kantosa 2013-12-8

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https://ww2.mathworks.cn/matlabcentral/answers/109104-find-the-maximum-value-and-its-location-from-a-matrix-using-two-nested-loops

编辑： Alexandra Vaupotic 2021-2-8

采纳的回答： sixwwwwww

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Hi,

Right now I have this matrix K

K =
      -3    -8     6    -3    -8     6     9    24   -18
      -5    10    -9    -5    10    -9    15   -30    27
       8     4     9     8     4     9   -24   -12   -27
      -9   -24    18    12    32   -24     3     8    -6
     -15    30   -27    20   -40    36     5   -10     9
      24    12    27   -32   -16   -36    -8    -4    -9
       9    24   -18   -15   -40    30     0     0     0
      15   -30    27   -25    50   -45     0     0     0
     -24   -12   -27    40    20    45     0     0     0

I wonder how I can use two nested loops to find the maximum number and its location from this matrix.

It would be great if anyone can help me with this

Thank you very much :)

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sixwwwwww 2013-12-8

Is it homework?

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采纳的回答

sixwwwwww 2013-12-8

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https://ww2.mathworks.cn/matlabcentral/answers/109104-find-the-maximum-value-and-its-location-from-a-matrix-using-two-nested-loops#answer_117740

编辑：sixwwwwww 2013-12-8

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you can do it as follow:

 MaxValue = -Inf;
 row = 0;
 column = 0;
 for i = 1:size(K, 1)
     for j = 1:size(K, 2)
         if K(i, j) > MaxValue
             MaxValue = K(i, j);
             row = i;
             column = j;
         end
     end
 end

But you didn't ask for other ways - you rigidly specified the way. The other, more MATLAB-ish way would be to use the max() function. Look at the two arguments it returns. You might also find ind2sub() helpful,