Don’t Skip This! Prefix Sum & Merge Intervals Are Everywhere in LeetCode Interviews

Day 8 of the DSA Marathon.

This session focuses on a powerful mix of interview patterns
that frequently appear in LeetCode and MAANG / FAANG coding interviews.


👉 Prefix Sum
👉 Hashing
👉 Merge Intervals
👉 Sweep Line Algorithm
👉 Linked List

We’ll solve LeetCode interview-style problems and understand
how interval-based problems and linked list logic are handled
in real interview scenarios.

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📌 TOPICS & PROBLEMS COVERED
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Prefix Sum:
• Subarray Sum Equals K
• Range Sum Query
• Product of Array Except Self

Hashing:
• Two Sum
• Group Anagrams
• Contains Duplicate

Merge Intervals / Sweep Line:
• Merge Intervals
• Insert Interval
• Meeting Rooms
• Meeting Rooms II
• Minimum Number of Arrows to Burst Balloons

Linked List:
• Linked List Cycle
• Linked List Cycle II
• Middle of the Linked List

#DSA
#LeetCode
#DSALive
#LeetCodeLive
#DSAMarathon
#PrefixSum
#HashingDSA
#MergeIntervals
#SweepLineAlgorithm
#LinkedListDSA
#CodingInterview
#InterviewPreparation
#MAANG
#FAANG
#StudyWithMe
#LiveCoding
#Algorithms
#DataStructures

• Remove Nth Node From End of List

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🎯 SESSION GOAL
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Learn how Prefix Sum, Hashing, and interval-based problems
(Sweep Line & Merge Intervals) combine with Linked List logic
in real coding interviews.

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👥 WHO THIS LIVE IS FOR
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• MAANG / FAANG aspirants
• Serious LeetCode grinders
• DSA interview preparation
• Long focused “study with me” coding sessions

⏱ Format: Live coding + explanation
🚀 Goal: Strong DSA intuition, not memorized solutions

Start from Day 1–7 to follow the full DSA marathon journey.
More problems may be added during the live session based on flow.