Algorithm Problems

Overview

These are my solutions to multiple algorithm problems. Most of them are from Leetcode, but others will be from courses or books.

For my solutions to the Cracking The Code Interview book, check this repository. I have also created a directory to save my implementations of some Data Structures.

You can checkout my LeetCode Profile.

Important Links

• Curated list of problems: NeetCode 150.
• Practice Mock Interviews: Pramp.

Arrays and Strings

#	Title	Solution	Difficulty	Platform
905	Sort Array by Parity	Python	Easy	LeetCode
38	Count and Say	Python	Medium	LeetCode
14	Longest Common Prefix	Python	Easy	LeetCode
382	Move Zeroes	Python	Easy	LeetCode
26	Remove Duplicates from Sorted Array	Python	Easy	LeetCode
-	Friend Cycle	Python	-	-
-	Wrap Lines	Python	-	-
551	Student Attendance Record I	Python	Easy	LeetCode
2269	Find the K-Beauty of a Number	Python	Easy	LeetCode

Linked Lists

#	Title	Solution	Difficulty	Platform
141	Linked List Cycle	Python	Easy	LeetCode
109	Convert Sorted List to Binary Search Tree	Python	Medium	LeetCode

Trees and Graphs

#	Title	Solution	Difficulty	Platform
-	Maximum Common Prefix Between Any Two Words	Python	-	-
1584	Min Cost to Connect All Points	Python	Medium	LeetCode
-	Swap Nodes	Python	Medium	HackerRank
797	All Paths From Source to Target	Python	Medium	LeetCode
1020	Number of Enclaves	Python	Medium	LeetCode
1905	Count Sub Islands	Python	Medium	LeetCode
542	01 Matrix	Python	Medium	LeetCode
547	Number of Provinces	Python	Medium	LeetCode

Recursion and Dynamic Programing

#	Title	Solution	Difficulty	Platform
-	Add Digits Recursively	Python	-	-
-	All Possible Subsequences	Python	-	-
-	Count Occurrences	Python	-	-
-	H-Tree Construction	Python	-	Pramp
-	Has Adjacent Duplicates	Python	-	-
-	KeyPad Combinations	Python	-	-
-	Knapsack Combinations	Python	-	-
-	Min Cost Path Matrix	Python	-	-
-	N-Bits Booleans	Python	-	-
51	N-Queens	Python	Hard	LeetCode
200	Number of Islands	Python	Medium	LeetCode
47	Permutations II	Python	Medium	LeetCode
-	Possible Phrases	Python	-	-
-	Reverse String	Python	-	-
37	Sudoku Solver	Python	Hard	LeetCode
62	Unique Paths	Python	Medium	LeetCode
-	Ways To Climb Stairs	Python	-	-
79	Word Search	Python	Medium	LeetCode
-	Winning Hand	Python	-	-
-	The Coin Change Problem	Python	Medium	HackerRank

Sorting and Searching

#	Title	Solution	Difficulty	Platform
2279	Maximum Bags With Full Capacity of Rocks	Python	Medium	LeetCode
162	Find Peak Element	Python	Medium	LeetCode
-	External Sorting	Python	-	-

NP-Complete

#	Title	Solution	Difficulty	Platform
-	Set Covering Problem	Python	-	Grokking Algorithms Book

License

MIT © André Brandão