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DeepSWE Roadmap

A Note from DeepSWE

📏Arrays

Remove Duplicates from Sorted Array

Merge Sorted Array

Product of Array Except Self

First Missing Positive

Trapping Rain Water

🔑Hashing

Intro to Hashing

Contains Duplicate

First Unique Character in a String

Jewels and Stones

Top K Frequent Elements

Encode and Decode TinyURL

Longest Consecutive Sequence

Insert Delete GetRandom O(1)

Find All Anagrams in a String

🔗LinkedLists

Intro To Linked Lists

Reverse Linked List

Merge Two Sorted Lists

Linked List Cycle

Add Two Numbers

Remove Nth Node

Copy List with Random Pointer

🌳Trees

Pre-order Traversal

In-order Traversal

Post-order Traversal

Binary Search Trees

Invert Binary Tree

Maximum Depth of Binary Tree

Balanced Binary Tree

Diameter of Binary Tree

Convert Sorted Array to Binary Search Tree

Subtree of Another Tree

Lowest Common Ancestor of a BST

Binary Tree Paths

Minimum Depth of a Binary Tree

Range Sum of BST

Root Equals Sum of Children

Binary Tree Tilt

Find Mode in Binary Search Tree

Two Sum IV - Input is a BST

Binary Tree Level Order Traversal

Validate Binary Search Tree

Kth Smallest Element in a BST

Lowest Common Ancestor

Binary Tree Zigzag Level Order Traversal

Binary Tree Right Side View

Count Good Nodes in Binary Tree

All Nodes Distance K in Binary Tree

Binary Tree Vertical Order Traversal

Binary Search Tree Iterator

Unique Binary Search Trees

Sum Root to Leaf Numbers

Binary Tree Upside Down

Populating Next Right Pointers in Each Node

Populating Next Right Pointers in Each Node II

Find Leaves of a Binary Tree

House Robber III

Delete Node in a BST

Binary Tree Level Order Traversal II

Find Duplicate Subtrees

Cousins in a Binary Tree

Count Complete Tree Nodes

Inorder Successor in BST

Inorder Successor in BST II

Equal Tree Partition

Binary Tree Pruning

Closest Leaf in a Binary Tree

Flatten Binary Tree to Linked List

Construct Binary Tree from Preorder and Inorder Traversal

Binary Tree Maximum Path Sum

Serialize and Deserialize Binary Tree

Boundary of Binary Tree

Unique Binary Search Trees II

Serialize and Deserialize N-Ary Tree

📊Sorting

Intro to Sorting

Kth Largest Element in an Array

🔍Binary Search

Intro to Binary Search

Binary Search Tips and Tricks

Search in Rotated Sorted Array

🔄Recursion and Backtracking

Intro to Backtracking

Combination Sum

Permutations II

Combination Sum II

Letter Combinations of a Phone Number

Generate Parentheses

📈Graphs

Intro To Graphs

Topological Sort

Shortest Path Algorithms

Cycle Detection

Kruskals MST Algorithm

Number of Islands

Rotting Oranges

Surrounded Regions

Longest Increasing Path in a Matrix

🔽Tries

Implement Trie Prefix Tree

Design Add and Search Words Data Structure

🔼Heaps

Intro to Heaps & Priority Queues

Last Stone Weight

Top K Frequent Elements

Merge K Sorted Lists

Find Median from Data Stream

✂️String Manipulation

Valid Palindrome

Longest Palindromic Substring

Encode and Decode Strings

🪟Sliding Window

Best Time to Buy and Sell Stock

Maximum Average Subarray

Longest Substring Without Repeating Characters

Longest Repeating Character Replacement

Permutation in String

Minimum Size Subarray Sum

Count Number of Nice Subarrays

Longest Subarray of 1s After Deleting One Element

Find All Anagrams in a String

Longest Substring with At Most K Distinct Characters

Minimum Window Substring

Sliding Window Maximum

Substring with Concatenation of All Words

📚Stacks

Valid Parentheses

Evaluate Reverse Polish Notation

Generate Parentheses

Daily Temperatures

Largest Rectangle in Histogram

Trapping Rain Water

🚶Queues

Implement Queue using Stacks

Number of Recent Calls

Moving Average from Data Stream

Design Circular Queue

Sliding Window Maximum

💡Dynamic Programming

Bottom up 1D Dynamic Programming - Fibonacci

Bottom up 2D Dynamic Programming

Maximum Product Subarray

Unique Paths II

Minimum Path Sum

House Robber II

Longest Increasing Subsequence

Distinct Subsequences

🔢2D Matrix

Intro to 2D Matrix Problems

💰Greedy

Intro To Greedy Problems

Can Place Flowers

Best Time to Buy and Sell Stock II

Non-overlapping Intervals

Partition Labels

Minimum Number of Arrows to Burst Balloons

➕Prefix Sum

Range Sum Query - Immutable

Find Pivot Index

Subarray Sum Equals K

Continuous Subarray Sum

Subarray Sums Divisible by K

Range Sum Query 2D - Immutable

📏Intervals

Insert Interval

Merge Intervals

Non-overlapping Intervals

Meeting Rooms II

🧮Math

Palindrome Number

Reverse Integer

Roman to Integer

Reservoir Sampling

Integer to Roman

Factorial Trailing Zeroes

Max Points on a Line

🤖Bit Manipulation

Intro To Bit Manipulation

Number of 1 Bits

Hamming Distance

Number of Steps to Reduce a Number to Zero

Convert to Hexadecimal

Find the Difference

Sum of Two Integers

Single Number II

Bitwise AND of Numbers Range

Reverse Integer

Maximum XOR of Two Numbers in an Array

leetcode/DSA course System Design