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18 questions

  1. 1Assign human labelers, tasks, and models so every pairing is balanced.HardCoding· 30 min· OpenAI
  2. 2Build a Basic Regex ParserHardCoding· Adobe, Apple
  3. 3Given a list of conversion items between symbols, write an algorithm to return the conversion ratio for each pair of symbols.HardCodingTechnical· Snap
  4. 4Implement a hashmap without using any libraries.HardCoding· Apple, Goldman Sachs
  5. 5Find the first missing positive number in an array.HardCoding· Amazon
  6. 6Implement LRU Cache.HardCoding· Accenture, Adobe
  7. 7Merge k sorted linked lists.HardCoding· Adobe, Apple
  8. 8Given two strings (Word 1 and Word 2) and a list of valid words from a dictionary, return the minimum number of operations required to convert Word 1 to Word 2.HardCoding· Airbnb
  9. 9Given a matrix with a rat, bread, cat, and obstacles, find a path from the rat to the bread that maximizes the minimum distance from cat.HardCoding· Google
  10. 10Given an integer array nums and an integer k, return true if nums has a subarray of at least two elements whose sum is a multiple of k.HardCoding· Adobe, Apple
  11. 11Sudoku SolverHardCoding· Adobe, Apple
  12. 12Calculate the trapped rainwater between bars in a given array.HardCoding· Adobe, Amazon
  13. 13Calculate the number of times a pattern appears in a string.HardCoding· LinkedIn
  14. 14Given an array of points on a plane (x,y), write a function to return the distance between the closest pair of points.HardCoding· Visa
  15. 15Edit distanceHardCoding· Adobe, Amazon
  16. 16Implement a red-black tree.HardCoding· Apple
  17. 17Find the Largest Smaller BST KeyHardCoding
  18. 18BST Successor SearchHardCoding