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Engineering notes, weekly

Problem breakdowns, interview strategy, and what we learn shipping AI products.

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AlgoCracked

An AI product company in Nairobi, Kenya. We build and run AI products, and the interview-prep platform you are on.

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Challenge Library

Master algorithms and data structures with a curated collection of technical interview challenges. Filter by difficulty, topic, company, and pattern.

STATUS

DIFFICULTY

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0/ 145Solved
Easy
0/25
Medium
0/99
Hard
0/21
Filters

STATUS

DIFFICULTY

COMPANIES

Arrays
All tags
All patterns

24 of 145 shown

  • Minimum Size Subarray Sum45%Medium
  • Range Sum Query - Immutable60%Easy
  • First Missing Positive38%Hard
  • Next Permutation39%Medium
  • Set Matrix Zeroes54%Medium
  • Rotate Image72%Medium
  • Spiral Matrix47%Medium
  • Minimum Number of Arrows to Burst Balloons57%Medium
  • Non-overlapping Intervals49%Medium
  • Merge Intervals46%Medium
  • Insert Interval38%Medium
  • Meeting Rooms II51%Medium
  • Meeting Rooms57%Easy
  • Sliding Window Maximum47%Hard
  • Best Time to Buy and Sell Stock54%Easy
  • Trapping Rain Water60%Hard
  • Container With Most Water54%Medium
  • 3Sum33%Medium
  • Longest Consecutive Sequence47%Medium
  • Valid Sudoku59%Medium
  • Product of Array Except Self65%Medium
  • Top K Frequent Elements65%Medium
  • Two Sum51%Easy
  • Contains Duplicate61%Easy