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GRFAANG SQL Interview Question! Leetcode 182 - Duplicate Emails
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@greghogg5
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GREasy Uber Coding Interview Question - Check if a String Is an Acronym of Words - Leetcode 2828
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#coding #leetcode #programming #interview
@greghogg5
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NEMove Zeroes LeetCode (283) - Optimal In-Place Solution | Coding Interview Must-Know Master the classic "Move Zeroes" coding interview problem, a LeetCode Easy question (Problem 283) that is frequently asked at companies like Google, Amazon, and Meta.
In this tutorial, we walk you through the most efficient, in-place solution using the Two-Pointer technique. Learn how to move all the zeros to the end of an array while preserving the relative order of the non-zero elements, all with an optimal O(N) Time Complexity and O(1) Space Complexity.
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@next.tech12
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GRFAANG Interview Question - Binary Search on Sorted 2D Array - Leetcode 74 - Search a 2D Matrix
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@greghogg5
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ZESometimes interviewer's ask you to do problems without using in built function.
#javascript #reels #coding #tech #reel
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GRFAANG Interview Question - Path Sum - Leetcode 112
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@greghogg5
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ASHow do Google engineers know exactly how many servers an app needs before they write a single line of code? 🤯
Imagine a glowing, neon blueprint drawn on the back of a cute, pulsing little envelope. ✉️✨ It’s not magic. It’s a cheat code called Back-of-the-Envelope Estimation.
Boom. The interviewer asks: "How much storage does YouTube need daily?"
Do you panic? No. 🛑
You use the tech lead math hack. You round a day to 100,000 seconds. If YouTube gets 500 hours of video uploaded every minute, you quickly calculate the gigabytes. Instantly, you know you need to buy 10 Petabytes of storage. 🧠💾
That wraps up Phase 1! You know the foundations.
Tomorrow we start Phase 2: Distributed Systems, beginning with Consistent Hashing. Hit subscribe! 👇
#BackendEngineering #Programming #MathHack #GoogleEngineer #TechTips
@asynccodex
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COFinding the longest common prefix doesn’t need brute force or sorting. Just shrink the prefix until every string agrees — simple, clean, and interview-friendly! 🚀
Comment your prefix approach 👇
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@coding_fundamentals
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NEKth Largest Element in an Array | Coding Interview Must-Know
This problem looks simple… until interviews ask how efficient your solution is 👀
You’re given: 👉 An unsorted array
👉 A value k
👉 Find the kth largest element
Most beginners do this ❌
• Sort the array
• Pick the answer
What interviewers want ✅
• Understand trade-offs
• Use the right approach for the constraint
Key ideas explained here: ➡️ Sorting (baseline)
➡️ Min Heap (better for large data)
➡️ Quickselect (optimal, no full sort)
Why this problem matters: • Tests algorithm selection
• Tests time & space reasoning
• Frequently asked in FAANG interviews
If you can explain why Quickselect works, you stand out instantly.
Save this 📌
Comment “HEAP” if you want more heap & selection problems.
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@next.tech12
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SKIf you can’t solve this… you’re not interview ready.
LeetCode 283 – Move Zeroes
Given an array, move all zeroes to the end while maintaining the relative order of non-zero elements.
💡 Core Idea: Two Pointers
Use a left pointer to track where the next non-zero should go.
Iterate with right.
If nums[right] != 0 → swap with nums[left], then increment left.
⏱ Time Complexity: O(n)
📦 Space Complexity: O(1)
This pattern appears in:
Remove Element
Partition problems
Stable rearrangements
Save this for revision.
#leetcode #dsa #twopointers
#arrays #coding
@skills2salary
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MIwatch until the end!
@mikheleva
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NESet Matrix Zeroes | The Constant Space Trick Interviewers Love
This problem looks easy… until constant space is required 😮💨
The real trick is using the matrix itself as memory — a pattern that shows up again and again in interviews.
If you understand this logic once, you’ll never forget it.
📌 Save this for revision
💬 Comment “MATRIX” if you want more in-place algorithm tricks
🚀 Follow for daily DSA & LeetCode patterns
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