Learn essential coding patterns to answer problems and prepare for tech companies' interviews.

Ace the JavaScript Coding Interview

This module teaches us the underlying patterns behind common coding interview questions. By learning these essential patterns, we'll be able to unpack and answer any problem the right way—just by assessing the problem statement. This approach was created by FAANG hiring managers to help us prepare for the typical rounds of interviews at major tech companies like Apple, Google, Meta, Microsoft, and Amazon.

By the end of this module, we'll have the skills we need to unlock even the most challenging questions, grok the coding interview, and level up our career with confidence.

Coding Interview Patterns

# Statement

Given an array of distinct integers, `nums`, and an integer, `target`, return a list of all unique combinations of `nums` where the chosen numbers sum up to the `target`. The combinations may be returned in any order.

An integer from `nums` may be chosen an unlimited number of times. Two combinations are unique if the 
frequency of at least one of the chosen integers is different.

**Constraints:** 
- $1 \leq$ `nums.length` $\leq 30$
- $2 \leq$ `nums[i]` $\leq 40$
- $1 \leq$ `target` $\leq 40$
- All integers of `nums` are unique.

# Examples 

Try to solve the Combination Sum problem.