Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Go

Solution: Unique Number of Occurrences

Explore how to use hash maps and hash sets to check if each element in an integer array has a unique frequency of occurrence. This lesson guides you through designing the solution, understanding the time and space complexity, and implementing the algorithm step-by-step.

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:

  • 11<= nums.length <=10001000

  • −1000-1000 <= nums[i] <= 10001000

Solution

The algorithm checks if there is a unique number of occurrences ...