How to remove parentheses from all single words in a string?

Example:

(G5)*((G6)*(G2+G4))+(G2)*(-(G4+G6)*(G1))+(G4)*(-(G6)*(G3))

Changes to:

G5*(G6*(G2+G4))+G2*(-(G4+G6)*G1)+G4*(-G6*G3)

Answer 1

[Azzi Abdelmalek]

s='(G5)*((G6)*(G2+G4))+(G2)*(-(G4+G6)*(G1))+(G4)*(-(G6)*(G3))'
[i1,i2]=regexpi(s,'\<\([a-z0-9]+\>\)')
s([i1 i2])=[]

Or

s='(G5)*((G6)*(G2+G4))+(G2)*(-(G4+G6)*(G1))+(G4)*(-(G6)*(G3))'
out=regexprep(s,'\<\(([a-zA-Z0-9]+)\>\)','$1')

[S H]

It works. Thank you.

Answer 2

[Charles Kluepfel]

I've just added to the File Exchange

Charles Kluepfel (2025). removeParentheses ( https://www.mathworks.com/matlabcentral/fileexchange/181983-removeparentheses ), MATLAB Central File Exchange. Retrieved September 8, 2025.

It was developed using chatGPT.

[S H]

It works and is effectively removing all redundant parentheses.