How to produce substrings

Write a single MATLAB statement that will accomplish the stated purpose. Assume a text string TS1 has already been defined. Find all occurrences of the string @3G in string TS1 and place the locations of the first character of each such substring (@) into Str3G. Example: TS1='%@3Gb6kl@3G9@33G' returns Str3G=[2 9].

Answer 1

[Star Strider]

Use strfind:

TS1='%@3Gb6kl@3G9@33G'
Str3G = strfind(TS1, '@3G')

Str3G =
     2     9