अभ्यास • Week 27

Weekly MUST Budget Standard

26.0h / 27.0h cap

Hour Calibration

actual hours logged

Rule: slippage > 1.25x triggers Scope-Cut Rung 2

Week Execution 0%

0/ 14 tasks 0.0h

target

Week Objective & Target Output

Target Output

April 5 – April 11, 2027 — IAT2 predicted Apr 5–9. Focus: Partition DP, MCM & DP on Trees; Bitmask DP Introduction; AWS Foundations & Deploy (IAM, EC2 or ECS/App Runner, RDS, S3, CloudWatch); LLD Machine Coding Session 5 — Splitwise (Timed 45 min); HLD Case Study: URL Shortener (TinyURL).

Weeks: W26 W27 Active W28 W29 W30

MUST — Critical Path

10 Tasks • ~26.0h

Non-negotiable core curriculum

DSA (Java) 2 tasks

DSA Partition DP, MCM & DP on Trees 6 problems

Matrix Chain Multiplication, Minimum Cost to Cut a Stick, Burst Balloons, Palindrome Partitioning II, Partition Array for Maximum Sum, Count Square Submatrices with All Ones. TUF+ A2Z Step 16.8 & 16.9

3.5h

DSA DSA Daily Quota (Week 27) 4 problems

Solve 4 new problems from NeetCode 150 — 2-D Dynamic Programming; time-box each at 25 min before any hint (2.5h includes editorial on misses), then log pattern and miss reason in the Journal. Never repeat a problem already in the ledger.

2.5h

Competitive Programming 1 tasks

CP Contest & Upsolving (Week 27) LC #

LeetCode Weekly Contest + mandatory upsolving (Codeforces runs on even weeks). Ratings are tracked metrics, never gates.

2.5h

Cloud & DevOps 1 tasks

DEVOPS AWS Foundations & Deploy (IAM, EC2 or ECS/App Runner, RDS, S3, CloudWatch)

Create an AWS account with a billing alarm, set up IAM users/roles, deploy PlacementPilot to EC2 or ECS/App Runner with RDS Postgres, S3 for artefacts and CloudWatch logs [VERIFY free-tier terms: credit-based plan]. Why: GCC and Amazon interviews probe real cloud basics. Cost cap: a ₹1,000 / $10 billing alarm on day 1, a teardown script (terraform destroy or a CLI script) committed to the repo, and resources stopped after every session.

7.0h

Core CS (LLD) 1 tasks

LLD LLD Machine Coding Session 5 — Splitwise (Timed 45 min)

Timed 45 min using the LLD rubric (Architecture §15): requirements → entities → interfaces → patterns → concurrency → tests → extensibility. Write the checklist and a one-page class diagram; self-timed [VERIFY lldcoding.com / Workat.tech availability]. Problem: Splitwise expense sharing; concurrency: ConcurrentHashMap for balances, ReentrantLock for settlement operations, concurrent expense updates per group.

1.5h

Core CS (HLD) 2 tasks

HLD HLD Case Study: URL Shortener (TinyURL)

Functional/non-functional requirements, capacity estimation (QPS, storage), API design, hashing vs base62 encoding with counter, database schema (RDBMS vs NoSQL), deduplication, analytics. Architecture §6.2

3.5h

HLD Hello Interview TinyURL Breakdown

Review hellointerview.com deep dive on modern URL shortener bottlenecks.

1.5h

Recruiting Pipeline 1 tasks

PIPELINE Recruiting Pipeline Weekly (Week 27)

Calendar check against the Opportunity Calendar (Architecture §16); send ≥ 5 personalised outreach messages (alumni, seniors, recruiters) and log each in the Tracker; follow up open threads; ask for a referral 1–2 days after any OA invite; apply within 72 h of any new posting on the Target-40.

1.5h

Mock Interviews 1 tasks

MOCK Mock Interview 6 (HLD — Cache & URL Shortener)

60-min HLD on a URL shortener with a distributed cache; estimation and trade-offs out loud. Rubric: HLD (Architecture §15.3: requirements → estimation → API → data model → architecture → deep dive → bottlenecks/trade-offs).

2.0h

Aptitude 1 tasks

APT Aptitude Timed Drill (Week 27)

25-minute timed mixed set (quant, logical reasoning, data interpretation) from IndiaBix / PrepInsta-style banks; log accuracy and seconds per question in the Tracker. Target: ≥ 70% accuracy by W28.

0.5h

SHOULD — Depth & Mastery

(3 Tasks)

Execute when MUST pace is on track

CORE Aditya Verma DP 1D Series

Watch intuitive explanations of 0/1 knapsack and bounded memoization.

2.0h

CORE Problem-Solving Journal Spaced Review (Week 27)

Re-solve 3 tagged DP and graph problems.

2.0h

CORE Bitmask DP Introduction

Travelling Salesman Problem (small N), Assignment Problem using bitmask, Count subsets with AND equal to zero. [3 problems]

2.0h

STRETCH — If Ahead

(1 Tasks)

Bonus reps & competitive advantage

SPRING Spring Boot Validation & Global Exception Handling

Implement @Valid bean validation with custom error response DTOs and @ControllerAdvice.

2.0h

verified_user

Weekly Clearance Gate

0 / 7 Cleared

[T: Partition DP, MCM & DP on Trees] DSA (Partition DP & Trees): Can you solve Matrix Chain Multiplication and Partition Array for Maximum Sum using memoization and tabulation?

Evidence: one problem from this task re-solved cold in ≤ 25 min a week later, logged in the Journal.

[T: AWS Foundations & Deploy (IAM, EC2 or ECS/App Runner, RDS, S3, CloudWatch)] Have you completed “AWS Foundations & Deploy (IAM, EC2 or ECS/App Runner, RDS, S3, CloudWatch)” (Create an AWS account with a billing alarm, set up IAM users/roles, deploy PlacementPilot…)?

Evidence: GitHub Actions run URL and public service URL.

[T: LLD Machine Coding Session 5 — Splitwise (Timed 45 min)] LLD: Have you completed “LLD Machine Coding Session 5 — Splitwise (Timed 45 min)” (Timed 45 min using the LLD rubric (Architecture §15): requirements → entities →…)?

Evidence: class diagram and code link in your design repo.

[T: HLD Case Study: URL Shortener (TinyURL)] HLD: Have you completed “HLD Case Study: URL Shortener (TinyURL)” (Functional/non-functional requirements, capacity estimation (QPS, storage), API design,…)?

Evidence: 1-page write-up in your design repo.

[T: Recruiting Pipeline Weekly (Week 27)] Recruiting Pipeline: Have you completed “Recruiting Pipeline Weekly (Week 27)” (Calendar check against the Opportunity Calendar (Architecture §16); send ≥ 5 personalised…)?

Evidence: Tracker log shows ≥ 5 personalised outreach messages this week.

[T: Mock Interview 6 (HLD — Cache & URL Shortener)] Have you completed “Mock Interview 6 (HLD — Cache & URL Shortener)” (60-min HLD on a URL shortener with a distributed cache; estimation and trade-offs out loud)?

Evidence: rubric sheet saved in Journal.

Health & Guardrails: 1 full rest day taken every 2 weeks?

tune

If Behind / Life Interruption Protocol

Triage Rule

When academic exams spike or weekly time slips, execute this contingency plan:

shield Protect (Non-Negotiable)

Partition DP, MCM & DP on Trees + AWS Foundations & Deploy (IAM, EC2 or ECS/App Runner, RDS, S3, CloudWatch) + Recruiting Pipeline Weekly (Week 27)

schedule Defer (Safe to Shift)

Aditya Verma DP 1D Series → weekend; Hello Interview TinyURL Breakdown → Week 28

edit_note

Week 27 Technical Notes & Journal

#LeetCode #Java #DSA #Week27