Merging or Combining Rows

I have a matrix that looks like this:

86 34

23 59

93 45

(Random numbers) But I want to make it like this:

8634

2359

9345

Basically, making each row of 2 numbers each into 1 number. I'm sure there is a basic solution to this, however I am new to Matlab.

The point of this little exercise is to find the unique number sequence. I tried summing along the rows and using "unique" but the problem was that some rows summed to the same value, even with different numbers. i.e.:

72 34

34 72

These would sum to the same number and one would be removed by "unique", even though their order is different.

I hope this was clear. Thank you!

Answer 1

[Shashank Prasanna]

I am sure there are quick way to solve the unique problem, but you can merge the two numbers by converting them to strings and back:

% If A is your matrix
>> A = [86 34
23 59
93 45
72 34
34 72];

>> B = num2str(A);
>> B(:,3:4) = [];
>> B = str2num(B);
>> unique(B)

[Jake]

Perfect, thank you very much.

Answer 2

[Roger Stafford]

For your stated purpose you should use 'unique' with the 'rows' option.

To answer your question, however, do the following. This assumes that all the numbers in A are integers somewhere in the interval from 0 to 99.

 B = 100*A(:,1)+A(:,2);