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

For the given array of integers `arr` and a target `t`, you have to identify the two indices that add up to generate the target `t`. Moreover, you can't use the same index twice, and there will be only one solution.

> **Note**: We will assume that the array is zero-indexed and the output order doesn’t matter.



**Constraints:**

- $2 \leq$ `arr.length` $\leq 10^3$
- $-10^9 \leq$ `arr[i]` $\leq 10^9$
- $-10^9 \leq$ `t` $\leq 10^9$
- Only one valid answer exists.

# Examples
