Complete DSA Series in Java | Math, Binary Search & Number Theory Problems Solved | By Gaurav Pandey

Complete DSA Series in Java – Day 8, Day 9 & Day 10

Welcome to the Complete DSA Series in Java! In these lectures, we solve some of the most important interview problems asked by top tech companies like Google, Amazon, Microsoft, Apple, Facebook, and Bloomberg.
You will learn Math, Recursion, Binary Search, Number Theory, Kadane’s Algorithm, and Interval Problems step-by-step with intuition and optimized solutions.

🔥 Day 8 – Math & Recursion Problems

Problems Covered:
Reverse Integer
Factorial Trailing Zeroes
Pow(x, n)
Power of Three

GitHub Code (Day 8):
https://github.com/PrepInstaPrime/DSA...

🔥 Day 9 – Math, Binary Search & Number Theory
Problems Covered:
Guess Number Higher or Lower
Count Primes (Sieve of Eratosthenes)
Perfect Number
Ugly Number
Find Numbers with Even Number of Digits

GitHub Code (Day 9):
https://github.com/PrepInstaPrime/DSA...

🔥 Day 10 – Kadane’s Algorithm & Interval Problems

Problems Covered:
Maximum Subarray (Kadane’s Algorithm)
Merge Intervals
GitHub Code (Day 10):
https://github.com/PrepInstaPrime/DSA...

🎯 What You Will Learn

Mathematical & number theory problem solving
Binary search strategies
Kadane’s Algorithm & interval merging
Time & space complexity analysis
Edge case handling in Java
Interview patterns used by FAANG companies

👌 Perfect For

DSA beginners & intermediate learners
College students preparing for placements
Software engineers preparing for FAANG/MAANG
Anyone learning Java and problem solving

📂 Complete Playlist
   • Java using DSA Series  

👨‍🏫 About the Educator
I’m Gaurav Pandey, helping you master Data Structures & Algorithms in Java through structured problem solving on Next Gen Skills.

Connect on LinkedIn:
https://www.linkedin.com/in/gaurav-pa...

⏱️ Timestamps
00:00 – Introduction
02:15 – Reverse Integer
18:53 – Factorial Trailing Zeroes
35:38 – Pow(x, n)
48:40 – Power of Three
55:00 – Key Takeaways

🔥 Day 9 – Math, Binary Search & Number Theory

⏱️ Timestamps (add exact timing after editing):
58:00 – Introduction
59:30 – Guess Number Higher or Lower
01:14:15 – Count Primes
01:43:37 – Perfect Number
01:55:20 – Ugly Number
02:00:00 - Maximum Subarray (Kadane’s Algorithm)
02:15:00 – Merge Intervals

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🔖 Hashtags

#DSA #Java #LeetCode #CodingInterview #PlacementPreparation #FAANG #Algorithms #DataStructures #BinarySearch #DynamicProgramming #KadanesAlgorithm #MergeIntervals #MathProblems #NumberTheory #NextGenSkills #GauravPandey