How can I determine whether a string contains a substring?

I have directory names that end in '0.0100'. I want to be able to skip certain directories by comparing the substring '0.0100' to the directory name. How can I do this?

Answer 1

[MathWorks Support Team]

You can use the 'contains' function to determine whether a string contains a given substring or not. Specifically, 'contains' returns true if the first argument contains the second argument and false otherwise. For example:

>> smallSubstring = '0.0100';
>> largeString1 = 'Item0.0100';
>> largeString2 = 'Item0.0101';
>> contains(largeString1, smallSubstring)

ans =

    logical

     1

>> contains(largeString2, smallSubstring)

ans =

    logical

     0

You may find more information about 'contains' at the following documentation page:

https://www.mathworks.com/help/matlab/ref/contains.html

[Praveen Manupati]

contains(largeString1, smallSubstring)

The above line will also work and gives logical output similar to your example. Thanks!

Answer 2

[Royi Avital]

I guess that since MATLAB R2016b it is recommended to use `contains` :

https://www.mathworks.com/help/matlab/ref/contains.html

[KUMAR TRIPATHY]

contains(largeString1, smallSubstring)

Answer 3

[Praveen Manupati]

contains(largeString1, smallSubstring)

The above line will also work and gives logical output. Thanks!