Merge pull request #159 from Rishabh2257/patch-1

Duplicate

Author: seeditsolution

duplicate

@@ -0,0 +1,45 @@
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+ public class Details {
+  public void countDupChars(String str){
+ 
+    
+    Map<Character, Integer> map = new HashMap<Character, Integer>(); 
+ 
+    char[] chars = str.toCharArray();
+ 
+
+    for(Character ch:chars){
+      if(map.containsKey(ch)){
+         map.put(ch, map.get(ch)+1);
+      } else {
+         map.put(ch, 1);
+        }
+    }
+ 
+   
+    Set<Character> keys = map.keySet();
+
+    for(Character ch:keys){
+      if(map.get(ch) > 1){
+        System.out.println("Char "+ch+" "+map.get(ch));
+      }
+    }
+  }
+ 
+  public static void main(String a[]){
+    Details obj = new Details();
+    System.out.println("String: BeginnersBook.com");
+    System.out.println("-------------------------");
+    obj.countDupChars("BeginnersBook.com");
+  
+    System.out.println("\nString: ChaitanyaSingh");
+    System.out.println("-------------------------");
+    obj.countDupChars("ChaitanyaSingh");
+ 
+    System.out.println("\nString: #@$@!#$%!!%@");
+    System.out.println("-------------------------");
+    obj.countDupChars("#@$@!#$%!!%@");
+  }
+}