Week 3

Third week of the 30-day plan. Focus: backtracking, greedy, recursion vs iteration, bit manipulation, advanced graphs, and first mock interviews.

Days and files

Day	Topic	File
15	Backtracking concepts	day-15-backtracking-concepts.md
16	Greedy algorithms	day-16-greedy-algorithms..md
17	Recursion vs. iteration	day-17-recursion-vs.-iteration.md
18	Bit manipulation techniques	day-18-bit-manipulation-techniques..md
19	Advanced graph problems	day-19-advanced-graph-problems.md
20	Mock interviews (1st session)	day-20-mock-interviews-1st-session.md
21	Review mock interview feedback	day-21-review-mock-interview-feedback.md

SDE-3 depth

• Backtracking: foundations/algorithms/backtracking.md

• Greedy: foundations/algorithms/greedy.md

• Bit manipulation: foundations/algorithms/bit-manipulation.md

• Advanced graphs: advanced-dsa/advanced-graphs.md

• Mock strategy: SDE3_DSA_ROADMAP.md (Mock Interview Preparation Strategy)