Hints for Problem #2 - Cell Array of Strings

[MATLAB logo] Exploiting MATLAB's Data Structures

The function who lists the variables in the workspace or a file. who, itself, displays the variables in the workspace. With an output argument,s = who, returns the names of the variables in the workspace as a cell array of strings. Use s = who('-file',topo.mat), to return the names of the variables in the MAT-file.
Its sister function, whos, also lists the names of the variables in a workspace or file but also includes other information like the size of each variable. When used with an output argument, s = whos, returns a structure that contains the names as well as this extra information.
Use the function load to load a MAT-file into the current workspace.
The function intersect(A,B) when A and B are cell arrays of strings returns the strings that are in both A and B.
The function strmatch(S,LIST) returns the index of the string S in the cell array of strings LIST. Use the additional input strmatch(S,LIST,'exact')when exact matches are required.