For the following problem, write a single MATLAB statement that will accomplish the stated purpose. Assume a character array TS$1$ has already been defined.

Create a vector Alphas that has the numeric positions of all alphabetic characters in TS$1.$ Example:

TS$1=\text{'}\%$@$3$Gb$6\text{'}$ returns Alphas$=[[$:$[4,5]\}$

Note: For this part, assume TS$1$ is already defined and exists in the Workspace.