Finding elements in string or cell array with common strings

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Saeid 2022-4-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1704785-finding-elements-in-string-or-cell-array-with-common-strings

评论： Saeid 2022-4-27

Consider two arrays A & B:

A={'blah_12_blah' 'blah_456_blah' 'blah_789_blah' 'blah_NPQZ_blah'}
B={'blah_NPQZ_blah' 'blah_135_blah' 'blah_579_blah' 'blah_12_blah' 'blah_RSTX_blah'} 

The termn 'blah' basically refers to any string that comes before and after the parts of interest and each 'blah' could be a different string.

I would like to compare these two arrays and fine only the members that have the "part of interest" in common. In this case it means that after comparing A & B, only the elements 'blah_12_blah' and 'blah_NPQZ_blah' will show up as output, since these elements have the parts '12' and 'NPQZ' incommon, no matter what their respective 'blah' parts are.

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Answer 1

Kevin Holly 2022-4-25

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1704785-finding-elements-in-string-or-cell-array-with-common-strings#answer_950615

在 MATLAB Online 中打开

A={'blah_12_blah' 'blah_456_blah' 'blah_789_blah' 'blah_NPQZ_blah'}
A = 1×4 cell array
    {'blah_12_blah'}    {'blah_456_blah'}    {'blah_789_blah'}    {'blah_NPQZ_blah'}
B={'blah_NPQZ_blah' 'blah_135_blah' 'blah_579_blah' 'blah_12_blah' 'blah_RSTX_blah'} 
B = 1×5 cell array
    {'blah_NPQZ_blah'}    {'blah_135_blah'}    {'blah_579_blah'}    {'blah_12_blah'}    {'blah_RSTX_blah'}
A_partofinterest = extractBetween(A,'_','_')
A_partofinterest = 1×4 cell array
    {'12'}    {'456'}    {'789'}    {'NPQZ'}
B_partofinterest = extractBetween(B,'_','_')
B_partofinterest = 1×5 cell array
    {'NPQZ'}    {'135'}    {'579'}    {'12'}    {'RSTX'}
A_new = A(ismember(A_partofinterest,B_partofinterest))
A_new = 1×2 cell array
    {'blah_12_blah'}    {'blah_NPQZ_blah'}
B_new = B(ismember(B_partofinterest,A_partofinterest))
B_new = 1×2 cell array
    {'blah_NPQZ_blah'}    {'blah_12_blah'}

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Kevin Holly 2022-4-25

在 MATLAB Online 中打开

That makes it a bit more challenging. Here is my solution.

A={'blah12balh' '54324569689' 'asdfkj789oiups' '+_()_NPQZ@$#%'}
A = 1×4 cell array
    {'blah12balh'}    {'54324569689'}    {'asdfkj789oiups'}    {'+_()_NPQZ@$#%'}
B={'wwelnkNPQZcvou' 'utcim135xzus' 'rsnfu579sodm' '9f6ej12d9j37' '0o1q9i2wRSTX7y3e64tr'} 
B = 1×5 cell array
    {'wwelnkNPQZcvou'}    {'utcim135xzus'}    {'rsnfu579sodm'}    {'9f6ej12d9j37'}    {'0o1q9i2wRSTX7y3e64tr'}

Assuming two characters have to be the same.

A_new_index = [];
B_new_index = [];
for b = 1:length(B)
    for a = 1:length(A)
        for ii = 1:length(A{a})-1
            if contains(B{b},A{a}(ii:ii+1)) == 1
                display(['part of interest is ' A{a}(ii:ii+1)])
                display(['A cell is ' A{a}])
                A_new_index = [A_new_index a];
                display(['B cell is ' B{b}])
                B_new_index = [B_new_index b];
            end
        end
    end
end
part of interest is NP
A cell is +_()_NPQZ@$#%
B cell is wwelnkNPQZcvou
part of interest is PQ
A cell is +_()_NPQZ@$#%
B cell is wwelnkNPQZcvou
part of interest is QZ
A cell is +_()_NPQZ@$#%
B cell is wwelnkNPQZcvou
part of interest is 12
A cell is blah12balh
B cell is 9f6ej12d9j37
A_new = A(1,unique(A_new_index))
A_new = 1×2 cell array
    {'blah12balh'}    {'+_()_NPQZ@$#%'}
B_new = B(1,unique(B_new_index))
B_new = 1×2 cell array
    {'wwelnkNPQZcvou'}    {'9f6ej12d9j37'}

Kevin Holly 2022-4-27

在 MATLAB Online 中打开

A={'123abc' '456klm' '1a2b3c'}
A = 1×3 cell array
    {'123abc'}    {'456klm'}    {'1a2b3c'}
B={'blah123abcblah' 'blah789ijkblah' 'blah11aa22bbblah' '123abc' '456pqr' '1a2b3c'}
B = 1×6 cell array
    {'blah123abcblah'}    {'blah789ijkblah'}    {'blah11aa22bbblah'}    {'123abc'}    {'456pqr'}    {'1a2b3c'}
contains(B,A)
ans = 1×6 logical array
   1   0   0   1   0   1
B(contains(B,A))
ans = 1×3 cell array
    {'blah123abcblah'}    {'123abc'}    {'1a2b3c'}

Saeid 2022-4-27

Cool, thanks!

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Finding elements in string or cell array with common strings

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Finding elements in string or cell array with common strings

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