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Phase 1 • Week 02

Basic Maths & Hashing, Java Essentials II, Target-40, CS50P Weeks 3–5

Weekly MUST Budget Standard
23.5h / 27.0h cap
Hour Calibration
actual hours logged
Rule: slippage > 1.25x triggers Scope-Cut Rung 2
Week Execution 0%
0/ 18 tasks 0.0h
target

Week Objective & Target Output

Target Output
October 12 – October 18, 2026 — Focus: Basic Maths I & II; Basic Hashing; Codeforces Warm-up & LeetCode Contest; CS50P Weeks 3–5; Java Essentials II — Streams, Lambdas, Generics.
Weeks: W01 W02 Active W03 W04 W05

MUST — Critical Path

12 Tasks • ~23.5h
DSA (Java) 3 tasks
DSA Basic Maths I & II 5 problems
Count digits, palindrome number check, GCD/LCM (Euclidean algorithm), check prime, list divisors. TUF+ A2Z Step 1.4
3.5h
DSA Basic Hashing 2 problems
Frequency count using HashMap, highest/lowest frequency element. TUF+ A2Z Step 1.5
2.5h
DSA DSA Transfer: No-Hint Timed Math & Hashing Set 2 problems LC #
Sit 2 unseen Math & Hashing 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
Competitive Programming 1 tasks
CP Codeforces Warm-up & LeetCode Contest LC #
2 Codeforces 800-rated problems during weekday warm-ups + weekend LeetCode contest + mandatory 48 h upsolve.
2.5h
AI / ML Track 1 tasks
AI/ML CS50P Weeks 3–5
Exceptions, Libraries, Unit Tests, File I/O. Complete all problem sets and push to GitHub. Test-out rule applies: problem sets only if the lectures are familiar.
2.0h
Core CS (Java) 1 tasks
JAVA Java Essentials II — Streams, Lambdas, Generics
Streams and collectors, lambdas and functional interfaces, Optional, generics and type erasure, exceptions (checked vs unchecked, try-with-resources), records and sealed types, immutability. Write one 40-line program per topic. Why: OA/interview Java rounds and every Spring codebase assume this.
3.0h
Core CS (OOPs) 2 tasks
OOPS Inheritance & Polymorphism
extends, super, method overriding vs overloading, dynamic method dispatch in Java. TUF+ OOPs
2.0h
OOPS SOLID Principles Intro
Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, Dependency Inversion with Java examples.
1.5h
Aptitude 1 tasks
APT Quant M2
LCM & HCF (Basic + Advanced).
1.5h
Professional 1 tasks
PRO Resume v1 Finalize
Polish Resume v1 (1 page, quantified bullets, education + GitHub profile) and have 2 seniors/peers review it; reused by the Apply-Now Sprint and every later application.
1.5h
Recruiting Pipeline 1 tasks
PIPELINE Target-40 List & Opportunity Calendar LC #
Build the Target-40 (Tracks A Product/Big Tech, B Banks/Fintech, C AI-Platform, D GCCs & high-growth startups; optional E quant/HFT only if Codeforces rating justifies) with: career-page URL, usual open month [VERIFY], OA vendor, levels.fyi band [VERIFY], job alerts set, and a dated deadline calendar. Rule: apply within 72 h of posting. Also decide now: LeetCode Premium (check the current INR price) or the free community company-wise lists, and your LLD problem source (workat.tech / lldcoding.com / awesome-low-level-design repo). OA Simulations from W13 depend on both.
1.5h
Mock Interviews 1 tasks
MOCK Peer Accountability & Mock Interview Circle
Form a trusted 3–5 person peer group for reciprocal mocks and weekly contest debriefs. Create fallbacks: Exponent Practice (ex-Pramp, 5 free credits/month [VERIFY]), interviewing.io and Hello Interview mocks. Why: unrecorded solo practice does not train delivery.
0.5h

SHOULD — Depth & Mastery

(3 Tasks)
Execute when MUST pace is on track
CORE Corey Schafer Python OOP
Watch "Classes and Instances" and "Class Variables vs Instance Variables" on YouTube.
2.0h
DSA DSA Spaced Re-Solve (Week 2)
Re-solve 3 pattern and math problems from Week 1 in under 10 min each.
1.5h
APT Logical L1
Series, Missing Numbers, Odd One Out (Basic + Advanced).
1.5h

STRETCH — If Ahead

(3 Tasks)
Bonus reps & competitive advantage
CP Codeforces Div.2 A/B Sprint
Solve 2 additional 900-rated problems on Codeforces.
2.0h
CORE Python CLI Mini-Tool
Write a command-line script in Python using argparse to parse and summarize a text file.
1.5h
AI/ML CS50P Weeks 6–8 & Certification
Regular Expressions, Object-Oriented Programming, Et Cetera + Final Problem Sets. Complete CS50P curriculum and push solutions.
3.0h
verified_user

Weekly Clearance Gate

0 / 8 Cleared
[T: Basic Maths I & II] Can you implement the Euclidean algorithm for GCD in Java in under 3 minutes?
Evidence: one problem from this task re-solved cold in ≤ 25 min a week later, logged in the Journal.
[T: Codeforces Warm-up & LeetCode Contest] Have you completed “Codeforces Warm-up & LeetCode Contest” (2 Codeforces 800-rated problems during weekday warm-ups + weekend LeetCode contest +…)?
Evidence: contest result and upsolve links in Journal.
[T: CS50P Weeks 3–5] Did you push all CS50P problem sets to GitHub and verify all tests pass?
Evidence: GitHub commit or notebook link.
[T: Java Essentials II — Streams, Lambdas, Generics] Java: Have you completed “Java Essentials II — Streams, Lambdas, Generics” (Streams and collectors, lambdas and functional interfaces, Optional, generics and type…)?
Evidence: GitHub link to your examples and written answers.
[T: Target-40 List & Opportunity Calendar] Have you completed “Target-40 List & Opportunity Calendar” (Build the Target-40 (Tracks A Product/Big Tech, B Banks/Fintech, C AI-Platform, D GCCs &…)?
Evidence: Tracker rows with dates and links.
[T: Peer Accountability & Mock Interview Circle] Have you completed “Peer Accountability & Mock Interview Circle” (Form a trusted 3–5 person peer group for reciprocal mocks and weekly contest debriefs)?
Evidence: link in your Journal.
[T: DSA Transfer: No-Hint Timed Math & Hashing Set] DSA: Did you pass “DSA Transfer: No-Hint Timed Math & Hashing Set” — 2 unseen Math & Hashing 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)
Basic Maths I & II + CS50P Weeks 3–5 + Target-40 List & Opportunity Calendar
schedule Defer (Safe to Shift)
Corey Schafer Python OOP → weekend; DSA Spaced Re-Solve (Week 2) → Week 3
edit_note

Week 02 Technical Notes & Journal

#LeetCode #Java #DSA #Week02