Algorithm review template: turn “I solved it once” into “I own the method”
After each problem, record:
SHIXING / PERSONAL NOTES
Think clearly about complicated things.
Notes on AI, software, algorithms, projects, and the judgment that forms between them.
01—21
Not a finished knowledge base, but a living record of thought.
Latest notes
Read all writing →Algorithm study roadmap: from intuition to a method library
The right roadmap is not just difficulty progression. It is capability progression.
Backtracking is constrained search, not random brute force
Backtracking becomes stable when three things are clear:
Before solving more problems, build complexity intuition first
Complexity intuition is the ability to look at an idea and quickly ask:
Binary search: the real challenge is monotonicity and boundary design
Binary search is not mainly about a loop template.
Graph problems become much easier once the model is explicit
Graph problems feel messy when the model is vague.
How I make a project actually move forward
Projects often stall not because people are idle, but because the work is not split clearly enough.
Topic index