AlgoExpert (Ace the Coding Interview)

This repository contains my solutions to the coding problems on AlgoExpert.

The solutions are coded in C++ and compiled using the g++ compiler in Ubuntu. Each file has a problem description inserted as a comment. Each file also contains a sample test case, to test the code run the following commands in the terminal from the correct working directory

g++ -o output <filename.cpp>
./output

Difficulty Levels

🟢 Easy
🔵 Medium
🔴 Hard
⚫️ Very Hard

Questions

Question	Difficulty	Category
Two Number Sum	🟢	Arrays
Validate Subsequence	🟢	Arrays
Sorted Squared Array	🟢	Arrays
Tournament Winner	🟢	Arrays
Non-Constructible Change	🟢	Arrays
Three Number Sum	🔵	Arrays
Smallest Difference	🔵	Arrays
Move Element To End	🔵	Arrays
Monotonic Array	🔵	Arrays
Spiral Traverse	🔵	Arrays
Longest Peak	🔵	Arrays
Array of Products	🔵	Arrays
First Duplicate Value	🔵	Arrays
Merge Overlapping Intervals	🔵	Arrays
Four Number Sum	🔴	Arrays
Subarray Sort	🔴	Arrays
Largest Range	🔴	Arrays
Min Rewards	🔴	Arrays
Zigzag Traverse	🔴	Arrays
Remove Duplicates from Linked List	🟢	Linked Lists
Linked List Construction	🔵	Linked Lists
Remove Kth Node From End	🔵	Linked Lists
Sum of Linked Lists	🔵	Linked Lists
Find Loop	🔴	Linked Lists
Reverse Linked List	🔴	Linked Lists
Merged Linked Lists	🔴	Linked Lists
Shift Linked List	🔴	Linked Lists
Branch Sums	🟢	Binary Trees
Node Depths	🟢	Binary Trees
Invert Binary Tree	🔵	Binary Trees
Palindrome Check	🟢	Strings
Caesar Cipher Encryptor	🟢	Strings
Nth Fibonacci	🟢	Recursion
Depth First Search	🟢	Graphs
Single Cycle Check	🔵	Graphs
Breadth First Search	🔵	Graphs
River Sizes	🔵	Graphs
Bubble Sort	🟢	Sorting
Kadane's Algorithm	🔵	Famous Algorithms