Neetcode - Algorithms & Data Structures for Beginners

• ARRAYS
• LINKED LISTS
• RECURSION
• SORTING
• BINARY SEARCH
• TREES
• BACKTRACKING
• HEAP PRIORITY QUEUE
• HASHING
• GRAPHS
• DYNAMIC PROGRAMMING
• BIT MANIPULATION

ARRAYS

Difficulty	Problem	Solution
	Remove Duplicates from Sorted Array	Python | PHP | Go
	Remove Element	Python | PHP | Go
	Shuffle the Array	Python | PHP | Go
	Concatenation of Array	Python | PHP | Go
	Baseball Game	Python | PHP | Go
	Valid Parentheses	Python | PHP | Go
	Min Stack	Python | PHP | Go

LINKED LISTS

Difficulty	Problem	Solution
	Reverse Linked List	Python | PHP | Go
	Merge Two Sorted Lists	Python | PHP | Go
	Design Linked List	Python | PHP | Go
	Design Browser History	Python | PHP | Go
	Number of Students Unable to Eat Lunch	Python | PHP | Go
	Implement Stack using Queues	Python | PHP | Go

RECURSION

Difficulty	Problem	Solution
	Reverse Linked List	Python | PHP | Go
	Fibonacci Number	Python | PHP | Go
	Climbing Stairs	Python | PHP | Go

SORTING

Difficulty	Problem	Solution
	Sort an Array	Python | PHP | Go
	Merge k Sorted Lists	Python | PHP | Go
	Kth Larges Element in an Array	Python | PHP | Go
	Sort Colors	Python | PHP | Go

BINARY SEARCH

Difficulty	Problem	Solution
	Binary Search	Python | PHP | Go
	Search a 2D Matrix	Python | PHP |Go

TREES

Difficulty	Problem	Solution
	Search in a Binary Search Tree	Python | PHP | Go
	Lowest Common Ancestor of a Binary Search Tree	Python | PHP | Go
	Insert into a Binary Search Tree	Python | PHP | Go
	Delete Node in a BST	Python | PHP | Go
	Binary Tree Inorder Traversal	Python | PHP | Go
	Kth Smallest Element in a BST	Python | PHP | Go
	Construct Binary Tree from Preorder and Inorder traversal	Python | PHP | Go
	Binary Tree Level Order Traversal	Python | PHP | Go
	Binary Tree Right Side View	Python | PHP | Go

BACKTRACKING

Difficulty	Problem	Solution
	Path Sum	Python | PHP | Go
	Subsets	Python | PHP | Go
	Combination Sum	Python | PHP | Go

HEAP PRIORITY QUEUE

Difficulty	Problem	Solution
	Kth Largest Element in a Stream	Python | PHP | Go
	Last Stone Weight	Python | PHP | Go
	K Closest Point to Origin	Python | PHP | Go

HASHING

Difficulty	Problem	Solution
	Contains Duplicate	Python | PHP | Go
	Two Sum	Python | PHP | Go
	LRU Cache	Python | PHP | Go
	Design HashSet	Python | PHP | Go
	Design HashMap	Python | PHP | Go

GRAPHS

Difficulty	Problem	Solution
	Number of Islands	Python | PHP | Go
	Max Area of Island	Python | PHP | Go
	Shortest Path in Binary Matrix	Python | PHP | Go
	Rotting Oranges	Python | PHP | Go
	Clone Graph	Python | PHP | Go
	Courses Schedule	Python | PHP | Go

DYNAMIC PROGRAMMING

Difficulty	Problem	Solution
	House Robber	Python | PHP | Go
	Unique Paths	Python | PHP | Go
	Unique Paths II	Python | PHP | Go
	Longest Common Subsequence	Python | PHP | Go

BIT MANIPULATION

Difficulty	Problem	Solution
	Number of 1 Bits	Python | PHP | Go
	Counting Bits	Python | PHP | Go
	Reverse Bits	Python | PHP | Go