Count Duplicate Elements | Dataford Interview Questions

Write a program to identify all the elements in an array that appear multiple times, and output how many times each element appears.

Implement find_repeated_elements(nums). Return a list of [value, count] pairs for values occurring at least twice, ordered by each value's first appearance. Return an empty list when no value is repeated.

Constraints

0 <= nums.length <= 1000
-10^9 <= nums[i] <= 10^9
Output pairs are ordered by first appearance in nums

Function Signature

def find_repeated_elements(nums):

Whenever you're ready, walk me through your approach or go straight to the code. The requirements are in the Question tab.

Problem

Write a program to identify all the elements in an array that appear multiple times, and output how many times each element appears.

Constraints

0 <= nums.length <= 1000
-10^9 <= nums[i] <= 10^9
Output pairs are ordered by first appearance in nums

Function Signature

def find_repeated_elements(nums):

Whenever you're ready, walk me through your approach or go straight to the code. The requirements are in the Question tab.