Java: Given a String find the distinct characters in it and count it
Given a String find the distinct characters in it and count it. Input: DISTINCT Output: DSNC 4 Approach: · Well, to approach this problem there are ‘N’ number of ways. · Convert string to character array. · Use HashMap to hold keys as characters and count as values. · Use any Set implemented Class add the characters and get the count. ( we can get distinct but need to remove repeated character ) · Use traditional Brute force method with multiple for loops, check each character and get the count. · Create your custom class with member variables as character and count add in to an ArrayList and get the count. · ...