Tally Occurrences
EasyData EngineeringHash TableArray
Description
Given an array of integers nums, return an object mapping each distinct value (as a key) to how many times it occurs.
Examples
Input:
nums = [1,1,2,3,3,3]Output:
{"1":2,"2":1,"3":3}Explanation:
Counting how often each value appears yields {"1":2,"2":1,"3":3}.
Input:
nums = [5]Output:
{"5":1}Explanation:
Counting how often each value appears yields {"5":1}.
Input:
nums = [2,2,2,2]Output:
{"2":4}Explanation:
Counting how often each value appears yields {"2":4}.
Constraints
- •
1 ≤ nums.length ≤ 10⁴