Question

For a given word, I want to search for all the substrings that appear next to each other at least 3 times, and replace all of them by only one. I know how to do this when the substring is only one character. For instance, the code below returns “Bah” for the input string “Bahhhhhhh”:

String term = "Bahhhhhhh";
term = term.replaceAll("(.)\\1{2,}", "$1");

However, I need a more generic pattern that converts “Bahahahaha” into “Baha”.

Answer 1

    String[] terms = { "Bahhhhhhh", "Bahahahaha" };
    for (String term : terms) {
        System.out.println(term.replaceAll("(.+?)\\1{2,}", "$1"));
    }

Output:

Bah 
Baha