Checking greater numbers

Write a program that will take a random 4x4 input matrix and will check whether 3 out of the total 4 numbers in column 4 are greater than the numbers in column 2. If thats true the program displays "C4 greater than C2". If that is false it displays "C4 less than C2"

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Sean de Wolski]

So is it three numbers greater than a number or three numbers greater than a specific number.

[1 2 3 4], [2 2 2 1], the second one has three numbers greater than a value in the first.

[Vijay]

It is at least three numbers from the fourth column each having a value greater than all the elements of the second column.

I hope I could clarify better.

Thanks

Answer 1

[Wayne King]

      x = randn(4,4);
      Y = x(:,4)-x(:,2);
      if (length(Y(Y>0))>2)
      disp('C4 greater than C2');
      elseif (length(Y(Y>0))<2)
      disp('C4 less than C2');
      else
      disp('What do you want to say here?');
      end

I'm assuming you mean at least 3 of the 4 numbers in column 4 are greater than in column 2. What do you want to say if it is 2 greater and 2 less?

[Vijay]

Yes you are right.

Let's make it a 3x4 matrix then.

I assume that only the last else statememnt will be dropped right?

Thanks

[Wayne King]

yes, that's right.