Write A Matlab Function of a matrix
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Write a matlab function which accepts n (row) by m (col) matrix. The function will exclude the repeated elements and sort the rest of the elements in descending order. (You can use any reasonable way to solve this problem).
Can u please help me about this question
4 个评论
Jan
2018-1-14
The question is not clear: "exclude the repeated elements" is ambiguous. For the input [1, 2, 1, 3] this can mean [1, 2, 3] (remove the repetitions only) or [2, 3] (remove all elements which occur repeatedly).
Does "You can use any reasonable way to solve this problem" include to submit a solution, which was written by another person?
Rik
2018-1-14
Spam by flag must be the most stupid kind of posting spam. Am I correct in assuming people with the reputation level to remove this flag will see it?
John D'Errico
2018-1-14
Removed. Both the spam flag, and the spam comment.
回答（2 个）
ANKUR KUMAR
2018-1-14
编辑：ANKUR KUMAR
2018-1-14
A=randi(25,25,100);
ss=func(A,10,20)
function S = func(A,m,n)
B=A(1:m,1:n);
C=B(:);
id=unique(C)
S=sort(id,'descend')
end
Jan
2018-1-14
If you are looking for a unique list of elements, start with a search in the documentation:
docsearch unique
You will find a command called unique(). See:
doc unique
Now its input should be a vector, not a matrix. Read the "Getting Started" chapter to learn, what A(:) does. For sorting:
docsearch sort
And again sort() is existing as command already.
doc sort
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