Solution: Unique Number of Occurrences
Explore how to use hash maps and hash sets to check if every element in an array has a unique number of occurrences. This lesson helps you implement an efficient algorithm with linear time complexity and understand the logic behind using these data structures for such problems.
We'll cover the following...
We'll cover the following...
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:
<= nums.length<=<= nums[i]<=
Solution
The algorithm checks if there is a unique number of ...