Find Repeating & Missing Number using Frequency Array | LeetCode 2028 | Blind 75 #38
LeetCode 2028 | Find Missing and Repeated Values | Blind 75 #38
In this video, we solve LeetCode 2028 - Find Missing and Repeated Values
using the simplest and most beginner-friendly approach — Frequency Array!
The idea is super simple:
✅ Count how many times each number appears
✅ Frequency 2 = Repeating number
✅ Frequency 0 = Missing number
🔗 Source Code + Full Explanation:
https://github.com/yannigoyal/Blind75...
⏱️ Timestamps:
00:00 - Problem Understanding
00:18 - Intuition
01:27 - Code Walkthrough
04:25 - Complexity Analysis
05:00 - Outro
✅ What you will learn:
How to use a frequency array to solve grid problems
How to detect repeating numbers in O(n²) time
How to find the missing number without sorting
Time and Space Complexity analysis
🔥 Topics Covered:
LeetCode 2028 | Blind 75 | Frequency Array | Hash Array |
Grid Problems | DSA | Coding Interview Prep | C++ Solution
📌 Related Problems to solve next:
Find the Duplicate Number (LeetCode 287)
Missing Number (LeetCode 268)
Set Mismatch (LeetCode 645)
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