public static void main(String args[]) {
        DifferentWaysToAddParentheses df = new DifferentWaysToAddParentheses();
        List<Integer> result = df.diffWaysToCompute("2*3-4*5");
        result.forEach(s -> System.out.println(s));
    }
https://leetcode.com/problems/different-ways-to-add-parentheses/
src/com/interview/recursion/DifferentWaysToAddParentheses.java