Check Frequency of Characters in a string Finding the frequency of a character in a string, means we have to check how many times a particular character is present in that string. Here, we have coded ...

These are your duplicate elements. This is in fact a very good solution because you can extend it to found count of duplicates as well. If you remember, I have used this approach to find duplicate ...

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