241. Different Ways to Add Parentheses (Medium)

Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. The valid operators are+,-and*.

Example 1

Input:"2-1-1".

((2-1)-1) = 0
(2-(1-1)) = 2

Output:[0, 2]

Example 2

Input:"2*3-4*5"

(2*(3-(4*5))) = -34
((2*3)-(4*5)) = -14
((2*(3-4))*5) = -10
(2*((3-4)*5)) = -10
(((2*3)-4)*5) = 10

Output:[-34, -14, -10, -10, 10]