Question 4: Find Duplicate Characters Problem: Find and count duplicate characters in a string. Code: The program reads a string and uses a HashMap to store the counts of each character. It then ...

📌 In order to find duplicate words, we first need to split the sentence into words. For that use split() method from String Class, this will return array of strings. 📌 After getting the list of ...

A clever awk command can make it easy to remove duplicate characters from a string.