Week 4: Specialized Patterns

Week $4$ covers remaining patterns:

$1.$ Day $22$: Intervals ($4$ problems). Practice merge and scheduling.

$2.$ Day $23$: Greedy ($4$ problems). Identify when greedy applies.

$3.$ Day $24$: Bit Manipulation ($4$ problems). Learn XOR and bit tricks.

$4.$ Day $25$: Union Find ($3$ problems). Practice connectivity queries.

$5.$ Day $26$: Trie ($3$ problems). Build prefix matching intuition.

$6.$ Day $27$: Mixed Review. Do $5$ random problems from different patterns.

Day $28$ is rest. Days $29$-$30$ are for mock interviews.