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

Ace the Java Coding Interview

This module teaches us the underlying patterns behind common coding interview questions. By learning these essential patterns, we'll be able to assess the problem statement and unpack and answer any problem the right way. This approach was created by FAANG’s 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
There are a total of $n$ classes labeled with the English alphabet ($A$, $B$, $C$, and so on). Some classes are dependent on other classes for compilation. For example, if class $B$ extends class $A$, then $B$ has a dependency on $A$. Therefore, $A$ must be compiled before $B$.

Given a list of the dependency pairs, find the order in which the classes should be compiled.

**Constraints:**
- Class name should be an uppercase character.
- $0 \leq$ `dependencies.length` $\leq 676$
- `dependencies[i].length` $= 2$
- All dependency pairs should be unique.

# Examples



Try to solve the Compilation Order problem.