Source Map — 13 Interview Master Problems¶
এই folder-এ ব্যবহৃত প্রতিটা external concept, problem, আর reference, তার origin আর copying status সহ। সব explanation আর "style" framing শূন্য থেকে লেখা; company-style labels শুধু publicly discussed patterns বর্ণনা করে (README.md-র disclaimer দেখো), কখনো verified company question lists না।
| Concept / Problem | Source Type | Source Name | Link | How it is used | Copying status |
|---|---|---|---|---|---|
| Company-style pattern emphases (community-reported) | Interview-prep guide | Tech Interview Handbook | https://www.techinterviewhandbook.org/ | commonly discussed interview patterns-এর একটা public source হিসেবে cite করা; আমাদের descriptions original | official link only |
| Pattern-based practice roadmap | Interview-prep guide | NeetCode roadmap | https://neetcode.io/roadmap | pattern groupings-এর একটা public source হিসেবে cite করা; আমাদের descriptions original | official link only |
| 45-minute mock methodology and rubric | This repo | Original teaching material | — | এই folder-এর জন্য লেখা | original explanation |
| Eight cross-topic combo patterns and recognition signals | This repo | Original synthesis of widely known techniques | — | hard-patterns.md; technique names standard community vocabulary, prose আমাদের | original explanation |
| Word Ladder | Online judge | LeetCode 127 | https://leetcode.com/problems/word-ladder/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Number of Islands | Online judge | LeetCode 200 | https://leetcode.com/problems/number-of-islands/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Course Schedule | Online judge | LeetCode 207 | https://leetcode.com/problems/course-schedule/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Median of Two Sorted Arrays | Online judge | LeetCode 4 | https://leetcode.com/problems/median-of-two-sorted-arrays/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Longest Consecutive Sequence | Online judge | LeetCode 128 | https://leetcode.com/problems/longest-consecutive-sequence/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Trapping Rain Water | Online judge | LeetCode 42 | https://leetcode.com/problems/trapping-rain-water/ | Monotonic-stack pattern + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Serialize and Deserialize Binary Tree | Online judge | LeetCode 297 | https://leetcode.com/problems/serialize-and-deserialize-binary-tree/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Rotting Oranges | Online judge | LeetCode 994 | https://leetcode.com/problems/rotting-oranges/ | Style example + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Merge Intervals | Online judge | LeetCode 56 | https://leetcode.com/problems/merge-intervals/ | Intervals pattern + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Merge k Sorted Lists | Online judge | LeetCode 23 | https://leetcode.com/problems/merge-k-sorted-lists/ | Heap pattern + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| LRU Cache | Online judge | LeetCode 146 | https://leetcode.com/problems/lru-cache/ | Design combo + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Minimum Window Substring | Online judge | LeetCode 76 | https://leetcode.com/problems/minimum-window-substring/ | Window+hashmap pattern + master table; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Kth Largest Element, Top K Frequent, K Closest Points | Online judge | LeetCode 215 / 347 / 973 | https://leetcode.com/problems/kth-largest-element-in-an-array/ , https://leetcode.com/problems/top-k-frequent-elements/ , https://leetcode.com/problems/k-closest-points-to-origin/ | amazon-style.md আর master table-এ heap drills | official link only |
| Linked-list / tree / string drills (Reverse List 206, Cycle 141, Merge Two 21, Remove Nth 19, Reorder 143, Validate BST 98, LCA 236, Level Order 102, Reverse Words 151, atoi 8, Palindromic Substring 5) | Online judge | LeetCode (IDs listed) | https://leetcode.com/ + per-problem links in microsoft-style.md | Microsoft-style drill list; tasks আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Longest Substring Without Repeating Characters | Online judge | LeetCode 3 | https://leetcode.com/problems/longest-substring-without-repeating-characters/ | Window pattern example | official link only |
| Daily Temperatures | Online judge | LeetCode 739 | https://leetcode.com/problems/daily-temperatures/ | Monotonic-stack drill | official link only |
| Longest Increasing Path in a Matrix | Online judge | LeetCode 329 | https://leetcode.com/problems/longest-increasing-path-in-a-matrix/ | Graph+DP combo example; আমাদের নিজের ভাষায় বর্ণনা করা | rewritten problem |
| Count of Smaller Numbers After Self / Reverse Pairs | Online judge | LeetCode 315 / 493 | https://leetcode.com/problems/count-of-smaller-numbers-after-self/ , https://leetcode.com/problems/reverse-pairs/ | Order-statistics combo + master table | rewritten problem |
| Word Break / LIS / Edit Distance / Unique Paths / Partition Equal Subset Sum | Online judge | LeetCode 139 / 300 / 72 / 62 / 416 | per-problem links in google-style.md and folder 12 | folder 12-র coverage থেকে reuse করা DP entries | rewritten problem |
| Problems referenced by name only (Meeting Rooms II, Koko Eating Bananas, Split Array Largest Sum, Partition to K Equal Sum Subsets, Minimize Sum Difference, House Robber II) | Online judge | LeetCode (by exact title) | https://leetcode.com/ | link policy অনুযায়ী platform root link দিয়ে নাম দেওয়া (exact slug assert করা হয়নি) | official link only |
| CSES tasks referenced by name (Longest Flight Route, Game Routes, Hamiltonian Flights, Meet in the Middle) | Online judge | CSES Problem Set | https://cses.fi/problemset/ | official set-এ নাম দেওয়া combo-pattern examples | official link only |
| Open practice pool | Online judge | Codeforces problem set | https://codeforces.com/problemset/ | Contest-side cross-training | official link only |
| All cross-references to earlier folders | This repo | Folders 01–12 | ../ | জুড়ে "Taught in" mappings | original explanation |