Week 3: Graphs and Recursion

Week $3$ tackles recursive patterns:

$1.$ Day $15$: Graphs BFS ($4$ problems). Practice level-order traversal.

$2.$ Day $16$: Graphs DFS ($4$ problems). Work on cycle detection.

$3.$ Day $17$: Backtracking ($5$ problems). Generate subsets and permutations.

$4.$ Day $18$: DP $1$D ($5$ problems). Build state transition intuition.

$5.$ Day $19$: DP $2$D ($4$ problems). Extend to two-dimensional states.

$6.$ Day $20$: Review. Trace through DP solutions you struggled with.

Day $21$ is rest.