Move all solutions into separate directory (cleanup)

the beginning

solutions/making-file-names-unique/Solution.java

@@ -0,0 +1,35 @@
+// Accepted
+// Runtime: 41 ms
+// Memory Usage: 54.7 MB
+// Submitted: January 14th, 2021
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+class Solution {
+    HashMap<String, Integer> count = new HashMap<String, Integer>();
+    
+    public String[] getFolderNames(String[] names) {
+        String[] results = new String[names.length];
+        
+        for (int i = 0; i < names.length; i++) {
+            if (count.containsKey(names[i])) {
+                int k = count.get(names[i]) + 1;
+                String test;
+                
+                do {
+                    test = names[i] + "(" + k++ + ")";
+                } while (count.containsKey(test));
+                
+                count.put(test, 0);
+                count.put(names[i], k - 1);
+                results[i] = test;
+            } else {
+                count.put(names[i], 0);
+                results[i] = names[i];
+            }
+        }
+        
+        return results;
+    }
+}