creating a function to output the invert the numbers in an array
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A = [ 1 2 3 4 5 6]
A = 6 5 4 3 2 1
when an array is entered, the function will display all elements on a row and all rows in inverted order.
I am having trouble creating a function to do the above for both vectors and matrices. I am to do this without using flip functions.
any help is appreciated ~
Alexandra
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Walter Roberson
2012년 10월 29일
Please use better tags for this question; see http://www.mathworks.co.uk/matlabcentral/answers/43073-a-guide-to-tags
답변 (3개)
Image Analyst
2012년 10월 28일
This sounds like a homework problem ( http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers). Hint: use a for loop with an increment of -1 to go backwards:
for row = lastRow: -1 : 1
same for the columns. To determine the last row, use the size() function. Use fprintf() or disp() to display. Also, type
doc colon
on the command line to learn how the colon operator works. Post back here with your attempt if you're still having trouble.
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Chris A
2012년 10월 28일
A = [ 1 2 3 4 5 6]';
b=reshape(sortrows(horzcat(A, ((numel(A):-1:1)')), [2]),[],1);
b(1:6),
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Andrei Bobrov
2012년 10월 29일
편집: Andrei Bobrov
2012년 10월 29일
ii = numel(A):-1:1;
B = A(ii);
or
B = A(sort(1:numel(A),'descend'));
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