Unit

Data Structure and Algorithm V

Master Key Algorithms: Strings, Greedy, Intervals, Math/Geometry & Bit Manipulation – Practice with Curated LeetCode Questions
String
Greedy Algorithm
Intervals
Math & Geometry
Bit Manipulation

Duration

5 weeks

random shape
thumbnail image

Introduction

Welcome to Data Structures and Algorithms V.
In this unit, you'll explore a set of advanced and powerful problem-solving strategies, including Strings, Greedy Algorithms, Intervals, Math & Geometry, and Bit Manipulation. The focus is on breaking complex challenges into manageable parts and crafting efficient solutions step by step.
By working through carefully chosen LeetCode problems, you'll gain experience in recognizing recurring patterns, implementing core algorithms, and refining your code for better performance. These skills are crucial for succeeding in technical interviews at top-tier tech companies and will empower you to tackle tough programming problems throughout your career.

Prerequisites

  • Complete Data Structure and Algorithm IV Unit.

Skills Covered

In this unit, we will cover the following topics:
  • Math: Tackle common DSA problems that involve fundamental math concepts.
  • Bit Manipulation: Master bit-level operations by solving frequently asked LeetCode questions.
  • Strings: Learn string searching techniques and solve popular string-related problems.
  • Intervals: Practice a variety of problems that involve working with intervals.
  • Greedy Algorithms: Understand and apply greedy strategies to solve optimization problems.

Recommended Study Material

Bit Manipulation
Learn about bit manipulation.
Bit Manipulation

Duration:

30 minutes

Rabin-Karp Algorithm
Learn about Rabin-Karp Searching Algorithm
String
Algorithm

Duration:

30 minutes

Greedy Algorithm
Introduction To Greedy Algorithms
Greedy Algorithm

Duration:

30 minutes

Practice Problems

StatusBookmarkProblemDifficultyTagsSolution
Count PrimesEasy
Excel Sheet Column TitleEasy
Greatest Common Divisor of StringsEasy
Transpose MatrixEasy
Happy NumberEasy
Plus OneEasy
Roman to IntegerEasy
Insert Greatest Common Divisors in Linked ListMedium
Rotate ImageMedium
Spiral MatrixMedium
Reverse IntegerMedium
Set Matrix ZeroesMedium
Pow(x, n)Medium
Multiply StringsMedium
Detect SquaresMedium
Max Points on a LineHard
Single NumberEasy
Number of 1 BitsEasy
Counting BitsEasy
Add BinaryEasy
Reverse BitsEasy
Missing NumberEasy
Build Array from PermutationEasy
Sum of Two IntegersMedium
Reverse IntegerMedium
Bitwise AND of Numbers RangeMedium
Minimum Array EndMedium
Reverse StringEasy
Rotate StringEasy
Backspace String CompareEasy
Repeated Substring PatternEasy
String Matching in an ArrayEasy
Decode StringMedium
Decode WaysMedium
Encode and Decode StringsMedium
Vowels Game in a StringMedium
String CompressionMedium
String Compression IIIMedium
Repeated String MatchMedium
String Compression IIHard
Longest Duplicate SubstringHard
Shortest PalindromeHard
Design a Text EditorHard
Merge IntervalsMedium
Insert IntervalMedium
Minimum Number of Arrows to Burst BalloonsMedium
Maximum Number of Events That Can Be AttendedMedium
Non-overlapping IntervalsMedium
Lemonade ChangeEasy
Jump GameMedium
Jump Game IIMedium
Jump Game VIIMedium
Minimum Add to Make Parentheses ValidMedium
Valid Parenthesis StringMedium
Task SchedulerMedium
Divide Array in Sets of K Consecutive NumbersMedium
Longest Turbulent SubarrayMedium
Gas StationMedium
Minimized Maximum of Products Distributed to Any StoreMedium
Prime Subtraction OperationMedium
Find Valid Matrix Given Row and Column SumsMedium
Minimized Maximum of Products Distributed to Any StoreMedium
Furthest Building You Can ReachMedium
Minimum Cost to Hire K WorkersHard
CandyHard
Minimum Number of Refueling StopsHard

Credit

The problem set is carefully curated from Neetcode and AlgoMaster, supplemented with additional practice questions for comprehensive coverage.

Contributor(s)

John Doe

Founder and Fullstack Developer at freeCodeProject.org

Created this Unit with curated list of questions for practice.