count occourance no of time no between 0 to 9 given by user in java

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count occourance no of time no between 0 to 9 given by user in java
2 Answer(s)      5 years ago
Posted in : Java Beginners

import java.io.*; class count_no { public static void main(String args[]) { try { int [] size=new int[9]; int i,temp=0; DataInputStream dis=new DataInputStream(System.in);

           for(i=0;i<9;i++)
            {
                    int no=Integer.parseInt(dis.readLine());

                    if(no==1)
                     {
                                   temp++;
                     }

                  else if(no==2)
                   {
                        temp++;
                   }
             }System.out.println(temp);     

        }catch(Exception e){}               
     }

}

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October 12, 2012 at 8:25 PM


thanks



October 8, 2012 at 4:23 PM


Here is a java example that accepts 9 integers from the user and count the occurrence of each integer.

import java.util.*;

public class CountNumberFrequency {
               public static void main(String[] args) {
                Scanner input = new Scanner(System.in);
                int[] arr = new int[9];
                System.out.println("Enter numbers:");
                for (int i = 0; i < arr.length; i++) {
                     arr[i] = input.nextInt();
                }
                Map<Integer, Integer> map = new HashMap<Integer, Integer>();
        for (int i = 0; i < arr.length; i++) {
            int key = arr[i];
            if (map.containsKey(key)) {
                int occurrence = map.get(key);
                occurrence++;
                map.put(key, occurrence);
            } else {
                map.put(key, 1);
            }
        }

        Iterator iterator = map.keySet().iterator();
        while (iterator.hasNext()) {
            int key = (Integer) iterator.next();
            int occurrence = map.get(key);

            System.out.println(key + " : " + occurrence + " times.");
        }
    }
}

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