## algo problems over 2nd-3rd Dec weekend

  • — 3rd weekend
  • max all-black submatrix — revisited
  • abbr generator, longest first — reviewed and tested
  • max path sum through bin tree — completed
  • a few tough hours reviewing and improving my python+cpp implementation of Kadane algo on array@int
  • common ancestor of 2 nodes in a bin tree with cycle — completed
  • rangeAND — completed
  • — 2nd weekend
  • combo with redraw – reviewed and tested
  • single-button phone pad problem — implemented 2 solutions
  • Leetcode phone pad problem: largely solved
  • cycle in binary tree — revisited but not solved
  • rangeAND — reviewed