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Unique Number of Occurrences

Understand how to use hash maps to verify if each integer in an array appears a unique number of times. This lesson guides you through analyzing the problem, rearranging logical steps, and implementing a solution in C++, enhancing your problem-solving skills for coding interviews.

Statement

Given an array of integers nums, return TRUE if each value in the array has a unique number of occurrences; otherwise, return FALSE.

Constraints:

  • 11 ...