Mahendra Yadav

[Puneet Patwari @system_monarch]

Let me save you 50+ hours of jumping between Leetcode lists with this list of 96 Leetcode problems, patterns + pattern triggers. This will make everyone sitting for placements, interviews, and grinding Leetcode solve 50-70% faster.

The goal is simple: spot the pattern early, reduce the search space, and save time in those 45-minute rounds.

Use this as a cheatsheet. The keywords are triggers, not guarantees.
But they’ll help you narrow down the right approach much faster.

[1] Sliding Window
Keywords: contiguous, substring, longest/shortest, at most k
Problems: 3, 76, 424, 567, 904, 1004

[2] Two Pointers
Keywords: sorted array, pair sum, left-right, move inward
Problems: 11, 15, 42, 125, 167, 881

[3] Binary Search
Keywords: sorted/monotonic, first/last, search space, log n
Problems: 33, 34, 153, 704, 875, 1011

[4] Hashing + Prefix Sum
Keywords: frequency, fast lookup, running sum, subarray count
Problems: 1, 49, 128, 560, 525, 974

[5] Monotonic Stack
Keywords: next greater, previous smaller, span, maintain order
Problems: 84, 496, 503, 739, 901, 907

[6] Heap / Top K
Keywords: top k, priority, smallest/largest, stream
Problems: 215, 295, 347, 378, 621, 703

[7] Intervals
Keywords: merge, overlap, meeting time, sort by start/end
Problems: 56, 57, 435, 452, 986, 1288

[8] BFS
Keywords: shortest path, level order, queue, neighbors
Problems: 102, 127, 199, 994, 1091, 752

[9] DFS / Backtracking
Keywords: all combinations, choices, recursion, undo move
Problems: 39, 40, 46, 78, 79, 131

[10] Trees
Keywords: subtree, depth, ancestor, recursive structure
Problems: 98, 104, 124, 230, 236, 543

[11] Linked List
Keywords: pointers, reverse, merge, node manipulation
Problems: 19, 21, 23, 141, 143, 206

[12] Union Find
Keywords: connected components, groups, merge sets, parent
Problems: 547, 684, 721, 947, 990, 1319

[13] Topological Sort
Keywords: dependency order, DAG, in-degree, course schedule
Problems: 207, 210, 310, 802, 1136, 1203

[14] Trie
Keywords: prefix, dictionary, startsWith, autocomplete
Problems: 208, 211, 212, 648, 677, 1268

[15] Greedy
Keywords: best local choice, maximize/minimize, jump, intervals
Problems: 45, 55, 134, 406, 763, 1029

[16] Dynamic Programming
Keywords: overlapping subproblems, state, transition, optimal result
Problems: 70, 198, 213, 300, 322, 746

[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re delighted to welcome @FreJunTeler as the Gold Sponsor for #PyConfHyd2026

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

⏳The countdown is on! Just 5 days to go for #PyConfHyd2026

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Zentropy as our silver sponsor.

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

📢The wait is over Pythonistas!

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Manoj Ampolu as a speaker at #PyConfHyd2026

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Karthikeyan VK as a Speaker at #PyConfHyd2026

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Anand S as a Speaker at #PyConfHyd2026.

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome @soumendrak_ as a Speaker at #PyConfHyd2026.

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Benjamin & Ritesh as our speakers at #PyConfHyd2026

Their talk will cover multilingual capabilities, natural language understanding techniques to create more dynamic & inclusive conversational experiences.

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[Odinaka Udoezika @ernestgfx]

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Kindly RETWEET!, someone might find it useful.

[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome @atul1b as a Speaker at #PyConfHyd2026

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🎉 We’re delighted to welcome @EPAMSystems as the Gold Sponsor for PyConfHyd2026.

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🙏A big thank you for your support.

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💼 The #PyConfHyd2026 Job Board is now LIVE!

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉 We’re excited to welcome Sonu Kumar as a Workshop Speaker at #PyConfHyd2026.

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🎉 We're delighted to welcome @Straive_ as a Gold Sponsor for #PyConfHyd2026.

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🎉We’re excited to welcome ASBL as the Platinum Sponsor for #PyConfHyd2026!

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🙏Thanks for sponsoring us!
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[Gaurav Sen @gkcs_]

AI Engineering Cohort 2026

Duration: 16 Weeks (28 Feb - 14 Jun)
Primary Audience: Software / AI Engineers
Registration Link: https://t.co/6l1xVg3h9v

[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

🧑‍💻 Thinking about attending #PyConfHyd2026? Here’s why you should.

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[PyConf Hyderabad #PyConfHyd2026 @pyconfhyd]

⏰ CFP closes today!

This is the last day to submit your #PyConfHyd2026 talk or workshop proposal. Don’t let your idea stay in draft, let’s get it on the schedule.

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#CFP #Deadline #1DayToGo #TechEvent #PythonCommunity #TechCommunity #HyderabadTech