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4 questions

  1. 1Implement a hashmap without using any libraries.HardCoding· Apple, Goldman Sachs
  2. 2Implement LRU Cache.HardCoding· Accenture, Adobe
  3. 3Given 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
  4. 4Calculate the trapped rainwater between bars in a given array.HardCoding· Adobe, Amazon