Grokking the Coding Interview: Patterns for Coding Questions
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Maximum Distinct Elements (medium)
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Problem Statement

Given an array of numbers nums and an integer K, find the maximum number of distinct elements after removing exactly K elements from the nums array.

Example 1:

  • Input: nums = [7, 3, 5, 8, 5, 3, 3], K=2
  • Expected Output: 3
  • Explanation: We can remove two occurrences of 3 to be left with 3 distinct numbers [7, 3, 8], we have to skip 5 because it is not distinct and occurred twice

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