Help finding cell array indices for unique characters in string names

Question

Brantosaurus 2023-10-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2036366-help-finding-cell-array-indices-for-unique-characters-in-string-names

评论： Brantosaurus 2023-10-20

How might i search a cell array for indices corresponding to character strings containing, say, 'H2O' as part of the full name. Tried:

exact_match_mask = strcmp(names, 'H2O'); exact_match_locations = find(exact_match_mask);

but it only identifies index 4. I need to identify the abcH2Oxyz possibility to capture indices 4 and 10.

names = cell(1, 10);
names{1} = '*H';
names{2} = 'HO2';
names{3} = '*H2';
names{4} = 'H2O';
names{5} = 'H2O2';
names{6} = '*O';
names{7} = '*OH';
names{8} = '*O2';
names{9} = 'O3';
names{10} = 'H2O(S)'; 

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Voss 2023-10-20

在 MATLAB Online 中打开

A more direct way of creating the cell array names is:

names = {'*H','HO2','*H2','H2O','H2O2','*O','*OH','*O2','O3','H2O(S)'};

Brantosaurus 2023-10-20

cheers for that :)

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Answer 1

Sulaymon Eshkabilov 2023-10-20

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2036366-help-finding-cell-array-indices-for-unique-characters-in-string-names#answer_1337751

在 MATLAB Online 中打开

All combined into one:

names = cell(1, 10);
names{1} = '*H';
names{2} = 'HO2';
names{3} = '*H2';
names{4} = 'H2O';
names{5} = 'H2O2';
names{6} = '*O';
names{7} = '*OH';
names{8} = '*O2';
names{9} = 'O3';
names{10} = 'H2O(S)'; 
[TF, IDX] = find(contains(names,"H2O"))
TF = 1×3
     1     1     1
IDX = 1×3
     4     5    10

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Brantosaurus 2023-10-20

Fantastic. Many thanks for this.

The other contributions are also much appreciated :)

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Answer 2

the cyclist 2023-10-20

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2036366-help-finding-cell-array-indices-for-unique-characters-in-string-names#answer_1337741

在 MATLAB Online 中打开

names = cell(1, 10);
names{1} = '*H';
names{2} = 'HO2';
names{3} = '*H2';
names{4} = 'H2O';
names{5} = 'H2O2';
names{6} = '*O';
names{7} = '*OH';
names{8} = '*O2';
names{9} = 'O3';
names{10} = 'H2O(S)';
contains(names,'H2O')
ans = 1×10 logical array
   0   0   0   1   1   0   0   0   0   1