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Lessons (3)

• Recursion & Backtracking

  … choose backtrack(path, choices); // 2. explore path.pop(); // 3. un-choose (backtrack) } } Example: all subsets js function subsets …

• DSA Interview Patterns Cheat Sheet

  … BFS, DFS, topological sort 6 Heaps, binary search on the answer, intervals 7 Backtracking 8 Dynamic programming Solve …

• Graphs: BFS & DFS

  … Follow one corridor as deep as it goes; at a dead end, backtrack to the last junction and …