...

app/src/main/java/com/base/filerecoveryrecyclebin/utils/SimilarHelper.kt

 package com.base.filerecoveryrecyclebin.utils
 
+import android.provider.MediaStore.Audio.Radio
 import java.io.File
+import kotlin.random.Random
 
 object SimilarHelper {
 
 
     fun calculate(list: ArrayList<File>) {
 
-        var result = arrayListOf<ArrayList<File>>()
+        val result = HashMap<String, ArrayList<File>>()
         val eachArrayList = arrayListOf<File>().apply {
             addAll(list)
         }
+        val comparedFile = arrayListOf<File>()
 
         val iterator = list.iterator()
+        val compareIterator = eachArrayList.iterator()
+
         while (iterator.hasNext()) {
+            val item = iterator.next()
+
+            if (!comparedFile.contains(item)) {
+                while (compareIterator.hasNext()) {
+                    val compareItem = compareIterator.next()
+
+                    if (item.absoluteFile != compareItem.absoluteFile) {
+
+                        val percent = similarPercent(item, compareItem)
+                        if (percent > 80) {
+                            if (result[item.absolutePath] == null) {
+                                result[item.absolutePath] = arrayListOf()
+                            }
+                            result[item.absolutePath]?.add(item)
+                            result[item.absolutePath]?.add(compareItem)
+                            comparedFile.add(compareItem)
+                            compareIterator.remove()
+                        }
 
+                    }
+                }
+            }
 
         }
 
     }
 
+    private fun similarPercent(srcFile: File, compareFile: File): Int {
+        return Random.nextInt(60, 100)
+
+    }
+
 }
\ No newline at end of file