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 ...

Write a recursive function which returns a new string in which all duplicate consecutive characters are separated by a ‘ * ’. E.g. for “hello” return “hel*lo”.

The String.split methods can be very convenient for easily splitting a provided String based on a provided regular expression String . The only trick is figuring out a regular expression token to ...