609. Find Duplicate File in System

class Solution {
    public List<List<String>> findDuplicate(String[] paths) {
        Map<String,List<String>> store = new HashMap<>();
        
        for(String path:paths){
            String[] arr = path.split(" ");
            String directory = arr[0];
            
            for(int i=1;i<arr.length;i++){
                //fileName(content)
                String fileName = arr[i].substring(0,arr[i].indexOf("("));
                String content = arr[i].substring(arr[i].indexOf("(")+1,arr[i].length()-1);
                List<String> filepaths = store.getOrDefault(content,new ArrayList<>());
                filepaths.add(directory +"/"+fileName);
                store.put(content,filepaths);
            }
        }
        
        store.entrySet().removeIf(entry -> entry.getValue().size()<2);
        
        return new ArrayList<>(store.values());
    }
}