Anuta Networks | OA Coding Questions and Solutions | Set - 3 | 2022

Question

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Answer 1

Online Assessment Question :

 

 

 

Comments

private static int countDuplicates(int arr[]){
     HashMap<Integer,Integer> map = new HashMap<>();
     
     for(int num:arr){
         map.put(num,map.getOrDefault(num,0) + 1);
     }
     int count = 0;
     for(Map.Entry<Integer,Integer> m:map.entrySet()){
         if(m.getValue() > 1) count++;
     }
     
     return count;
 }
}