The interviewer was rude and expected only a single, or the most optimized solution. This was my first interview with them, which was supposed to be a tech screen, and they expected me to give the most optimized solution to an LC hard question!

LeetCode Hard Question

Given a string num that contains only digits and an integer target, return all possibilities to insert the binary operators '+', '-', and/or '*' between the digits of num so that the resultant expression evaluates to the target value.

Note that operands in the returned expressions should not contain leading zeros.