Print Duplicates in String Array | Dataford Interview Questions

Write code to print all duplicates in a string array.

Given an array of strings, print each value that appears more than once exactly one time. Preserve the order in which values are first identified as duplicates. Matching is case-sensitive, and repeated occurrences after the first duplicate should not produce additional output.

Input and Output

The function accepts words, a list of strings, and prints each duplicate on its own line. It also returns the printed values as a list for testing.

Constraints

0 <= len(words) <= 10^4
Each string contains up to 100 characters
Matching is case-sensitive
Each duplicate is printed exactly once

Function Signature

def print_duplicates(words):

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