How can I remove non unique characters from 2 (or more) character arrays?

I would like help writing a script to remove same characters from three or four different character arrays. I have turned strings into character arrays and would like to compare each of the characters from each of the character arrays to see if they are the same. If they are the same, I would like to remove the characters, until all non-unique characters exist. I will then use these non-unique character arrays as the title of the data in the legend of a plot. Here's what I have so far:

These are my character arrays:

DriftEL = char(DriftELHdr);
DriftXEL = char(DriftXELHdr);
DriftLOS = char(DriftLOSHdr);

where:

DriftEL =  ta_tsc_tsc_mcs_hk_atc_gyro_drift_el
DriftXEL = ta_tsc_tsc_mcs_hk_atc_gyro_drift_xel
DriftLOS = ta_tsc_tsc_mcs_hk_atc_gyro_drift_los

Since the beginning characters are very similar, I would like to end up with only having el, xel, and los as the remaining characters. I would like to create some type of loop that compares the characters to each other and then removes the non-unique characters. I will be using this again, so I would like it to be dynamic and not just pertain to these character arrays. I'm thinking it would need to be something like this:

for i=1:length(DriftEL)
   for j=1:length(DriftXEL)
       for k=1:length(DriftLOS)
           if DriftEL(i)=DriftXEL(j)=DriftLOS(k)
              %Then remove the nonunique characters
           end
        end
    end
end

Any help would be appreciated. Thank you.

[Lokesh Ravindranathan]

Say if

 DriftEL =  tsc_tsc_mcs_hk_atc_gyro_drift_el
 DriftXEL = ta_tsc_tsc_mcs_hk_atc_gyro_drift_xel,

should the answer be

 DriftEL = el
 DriftXEL = ta_xel

Otherwise, it could be done with simple comparison.

Answer 1

[the cyclist]

If the part of the strings you want to strip have to be identical beginning from the first character, then this simple algorithm will work:

% The data
DriftEL  = 'ta_tsc_tsc_mcs_hk_atc_gyro_drift_el';
DriftXEL = 'ta_tsc_tsc_mcs_hk_atc_gyro_drift_xel';
DriftLOS = 'ta_tsc_tsc_mcs_hk_atc_gyro_drift_los';

% The algorithm [Strip off first character if shared by all others.]
while isequal(DriftEL(1),DriftXEL(1),DriftLOS(1))
    DriftEL(1)  = [];
    DriftXEL(1) = [];
    DriftLOS(1) = [];
end

[Sarah]

Awesome! Thank you!