How to sort rows of a matrix without using sortrows function?

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yijie yu
yijie yu 2019-4-11
编辑： Stephen23 2019-4-11
Write a function to realize the function of sortrows.
I wrote a simple sort function, but our teacher said that we can use less than five lines of code to achieve, I do not know how to improve
function A = sortrows( A )
[m,n]=size(A);
for N=1:m-1
for M=N+1:m
if A(N,1)>A(M,1)
t=A(N,:);
A(N,:)=A(M,:);
A(M,:)=t;
else if A(N,1)==A(M,1)
ll=0;
rr=0;
k=1;
while k<n
ll=ll+A(N,k);
rr=rr+A(M,k);
if(ll>rr)
t=A(N,:);
A(N,:)=A(M,:);
A(M,:)=t;
end
end
end
M=M+1;
end
N=N+1;
end
disp(A);
end
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yijie yu
yijie yu 2019-4-11
I've already posted it up, and I'd like to get some Suggestions for simplifying functions
Stephen23
Stephen23 2019-4-11
编辑：Stephen23 2019-4-11
@yijie yu: are you allowed to use sort ? If so, then you can implement a simple sortrows function with one loop and a few lines of code.

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回答（1 个）

Raj
Raj 2019-4-11
How about doing a small search and putting a little effort before dumping your homework question here!
See this.
  1 个评论
yijie yu
yijie yu 2019-4-11
I wrote a simple sort function, but our teacher said that we can use less than five lines of code to achieve, I do not know how to improve

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