अभ्यास • Week 19

Weekly MUST Budget Standard

25.5h / 27.0h cap

Hour Calibration

actual hours logged

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

Week Execution 0%

0/ 16 tasks 0.0h

target

Week Objective & Target Output

Target Output

February 8 – February 14, 2027 — Focus: Stack & Queue Mediums; Binary Search Trees (BST) I; BST FAQs & Properties; Spring Security & JWT Authentication; CN Application Layer.

Weeks: W16 W17 W18 W19 Active W20

MUST — Critical Path

10 Tasks • ~25.5h

Non-negotiable core curriculum

DSA (Java) 5 tasks

DSA Stack & Queue Mediums 3 problems

Balanced Parentheses, Min Stack, Infix to Postfix conversion. TUF+ A2Z Step 9.2

2.0h

DSA Binary Search Trees (BST) I 5 problems

Search in BST, Find Min/Max, Ceil/Floor in BST, Insert a node in BST, Delete a node in BST. TUF+ A2Z Step 14.1

3.5h

DSA BST FAQs & Properties 6 problems LC #A

Validate BST, LCA in BST, Inorder Successor/Predecessor, Kth smallest/largest in BST, BST Iterator, Construct BST from Preorder traversal. TUF+ A2Z Step 14.2

3.5h

DSA DSA Transfer: No-Hint Timed BST Set 2 problems LC #

Sit 2 unseen BST problems you have never attempted (pick from the LeetCode topic tag, NeetCode “similar questions” or a company list; never a problem named in any learning task), at least 72 h after the learning task — move the set to the first half of next week if needed. Format: 25 min per problem (35 min for a Hard), including 5 min for edge cases and a dry run; no hints, no AI. Pass bar: ≥ 1/2 solved inside the time box; on a miss, log the miss reason in the Journal and re-sit a fresh pair within 7 days.

1.5h

DSA DSA Daily Quota (Week 19) 4 problems

Solve 4 new problems from NeetCode 150 — Trees (BST & hard); 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 19) LC #

LeetCode Weekly Contest (+ Codeforces Div.2/3 when it fits) and mandatory upsolving within 48 h.

2.5h

Backend (Spring Boot) 1 tasks

SPRING Spring Security & JWT Authentication

Spring Security filter chain, password hashing, JWT access/refresh tokens, role-based method security, CORS. Capstone milestone 4: secure the PlacementPilot API.

6.0h

Core CS (CN) 1 tasks

CN CN Application Layer

DNS (resolution steps, recursive vs iterative, record types A, CNAME, MX), HTTP/1.1 vs HTTP/2 vs HTTP/3, HTTPS and TLS handshake (asymmetric to symmetric key exchange), WebSockets vs REST. TUF+ CN

2.5h

Recruiting Pipeline 1 tasks

PIPELINE Recruiting Pipeline Weekly (Week 19)

Calendar check against the Opportunity Calendar (Architecture §16); send ≥ 3 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.

1.0h

Aptitude 1 tasks

APT Aptitude Timed Drill (Week 19)

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

(5 Tasks)

Execute when MUST pace is on track

CORE ResNet Paper Reading

Deep Residual Learning for Image Recognition (He et al., 2015). Read paper; understand skip connections and vanishing gradients. Architecture §6.2

2.0h

APT Quant M19

Clocks & Geometry basics.

1.5h

CORE Interview Communication Protocol

Master the standard 8-step interview problem-solving communication flow: clarify requirements and constraints, walk through input/output examples, articulate brute force approach with time/space complexity, optimize strategy and explain trade-offs, identify edge cases, write clean idiomatic code, dry-run line-by-line with a concrete test case, and verify final time & space complexity. Record yourself solving 2 problems aloud using this protocol (evaluated against peer circle rubric).

1.5h

CN PyTorch CNN Project (Kaggle Notebook 2)

Build a CNN classifier for CIFAR-10 / Fashion-MNIST in PyTorch: Conv2d, MaxPool2d, BatchNorm2d, Dropout, Linear layers. Implement validation loop, learning rate scheduler, confusion matrix, and prediction diagnostics. Publish documented Kaggle notebook. Architecture §6.3

4.5h

CORE Problem-Solving Journal Spaced Review (Week 19)

Re-solve 3 tagged monotonic stack problems.

2.0h

STRETCH — If Ahead

(1 Tasks)

Bonus reps & competitive advantage

CORE Transfer Learning with PyTorch

Load a pretrained ResNet-18 model, freeze backbone weights, and fine-tune on custom dataset.

2.5h

verified_user

Weekly Clearance Gate

0 / 7 Cleared

[T: Binary Search Trees (BST) I] DSA: Have you completed “Binary Search Trees (BST) I” (Search in BST, Find Min/Max, Ceil/Floor in BST, Insert a node in BST, Delete a node in…)?

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

[T: BST FAQs & Properties] DSA: Have you completed “BST FAQs & Properties” (Validate BST, LCA in BST, Inorder Successor/Predecessor, Kth smallest/largest in BST, BST…)?

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

[T: Spring Security & JWT Authentication] Have you completed “Spring Security & JWT Authentication” (Spring Security filter chain, password hashing, JWT access/refresh tokens, role-based…)?

Evidence: GitHub PR link with passing CI run.

[T: CN Application Layer] CN: Have you completed “CN Application Layer” (DNS (resolution steps, recursive vs iterative, record types A, CNAME, MX), HTTP/1.1 vs…)?

Evidence: written answers in your notes repo.

[T: Recruiting Pipeline Weekly (Week 19)] Recruiting Pipeline: Have you completed “Recruiting Pipeline Weekly (Week 19)” (Calendar check against the Opportunity Calendar (Architecture §16); send ≥ 3 personalised…)?

Evidence: Tracker log shows ≥ 3 personalised outreach messages this week.

[T: DSA Transfer: No-Hint Timed BST Set] DSA: Did you pass “DSA Transfer: No-Hint Timed BST Set” — 2 unseen BST problems, 25 min per problem, no hints, pass bar ≥ 1/2 solved?

Evidence: timed result and miss reasons logged in the 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)

Stack & Queue Mediums + Spring Security & JWT Authentication + Recruiting Pipeline Weekly (Week 19)

schedule Defer (Safe to Shift)

ResNet Paper Reading → weekend; Aptitude: Quant M19 → Week 20

edit_note

Week 19 Technical Notes & Journal

#LeetCode #Java #DSA #Week19