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Technical interview (Core data structures, algorithms and concepts (Data…

- - - - Look for BUD
        
        Unnecessary work
        
        Duplicated work
        
        Bottlenecks
      - DIY
        
        Work on problem manually as you would approach finding name in the phone book
      - Simplify and generalize
        
        Solve an easier version of the problem first
      - Base Case and Build
        
        Try to solve most basic case and build up from there.
        
        Best Case and Build algorithms often lead to natural recursive algorithms
      - Data Structure Brainstorm
        
        Walk over all data structures, which one could be handy for solving this problem?
      - Best conceivable runtime
        
        The best runtime the problem could possibly have. (It doesn't mean that it's achievable, but definitely it's not possible to do better).
        
        It coul give you a hint for solving problem.
        
        You can definitely know when solution couldn't be optimized.