Return each character just after its consecutive occurrences

I want to return each character just after its consecutive occurrences
for example
Input : GeeeEEKKKss
Output : 1G3e2E3K2s

Input : ccccOddEEE
Output : 4c1O2d3E

I have developed this piece of code and it works fine but I am looking if I can fix this problem with java 8 with lambda expression or if there is a better solution for this.

 public static String encode(String plaintext ) {      String str = "";        for (int i = 0; i < plaintext.length(); i++) {            // Counting occurrences of s[i]          int count = 1;          while (i + 1 < plaintext.length()                  && plaintext.charAt(i)                  == plaintext.charAt(i + 1)) {              i++;              count++;          }          str += String.valueOf(count) + plaintext.charAt(i);        }      return str;  }  

https://stackoverflow.com/questions/66501133/return-each-character-just-after-its-consecutive-occurrences March 06, 2021 at 08:12AM