CS CORNER Sunita Rai

https://www.instagram.com/p/Dd6Sqk7itPd/?img_index=1&stkn=aGt3cGZhZHR0cmow Business Intelligence & Data Analytics 🔥

Today I was invited as a Guest speaker for Business Analytics session🔥

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ESSENTIAL ARRAY PATTERNS 📌 Every Developer Should Know 1. TWO POINTERS Find pairs, remove duplicates, compare elements from both ends, and optimize array traversals. 2. SLIDING WINDOW Solve subarray and contiguous sequence problems efficiently without repeatedly recalculating values. 3. PREFIX SUM Answer range-sum and cumulative queries quickly by reusing previously computed sums. 4. KADANE'S ALGORITHM Find the maximum-sum subarray in O(n) time. 5. BINARY SEARCH Whenever the search space is sorted or monotonic, think O(log n) instead of scanning everything. 6. CYCLIC SORT Useful for finding missing, duplicate, or misplaced numbers when values belong to a known range. 7. MERGE INTERVALS Handle overlapping, merging, and scheduling interval problems efficiently. 8. MONOTONIC STACK Solve next greater/smaller element problems and many range-optimization problems in O(n). 9. HASH MAP / FREQUENCY COUNT Count occurrences, detect duplicates, and perform fast lookups using hashing. 10. SORTING + GREEDY Sort the data first, then make locally optimal decisions to reach the best overall result. ✅ THE GOAL Don't memorize individual solutions. Learn to recognize the pattern behind the problem. Pattern recognition → Faster approach → Better complexity → Stronger interview performance

https://ezylern.com/instructor/sunita-rai Course Link🔥

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Nokia is hiring Position: Software Test Engineer Qualification: Bachelor’s/ Master’s Degree Experience: Experienced Location: Bangalore, India (Hybrid) 📌Apply Now: https://jobs.nokia.com/en/sites/CX_1/jobs/preview/37314/?keyword=engineer&location=India&locationId=300000000471745&locationLevel=country&mode=location

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