Algorithm frequently asked questions-python

1. Output the number of palindromes smaller than n

• algorithm
  • topic
    • 1. Red-black tree
    • 2. Summary of basic sorting algorithms (bucket sort, merge, fast sort, hill, insert, select, bubbling)
    • 3. Numbers that appear more than half of the time in the array-Python version
    • 4. Find prime numbers within 100
    • 5. The longest substring without repeated characters-Python implementation