JAVA :
class Solution {
public int minimumLengthEncoding(String[] words) {
Arrays.sort(words,(a,b) -> (-a.length() + b.length()));
StringBuilder sb = new StringBuilder();
for(String w:words){
String tmp = w + "#";
if(!sb.toString().contains(tmp)){
sb.append(tmp);
}
}
return sb.toString().length();
}}