Frequency of each digit of a number in Java

Frequency of each digit of a Number

Question : Write a program to count and display the frequency of each digit of a number.

For Example :-
 
Input                                               : 19224
Output                                            : Frequency of 1 is : 1
                                                         Frequency of 2 is : 2
                                                         Frequency of 4 is : 1
                                                         Frequency of 9 is : 1

Input                                               : 1113
Output                                            : Frequency of 1 is : 3
                                                         Frequency of 3 is : 1


Program to count & display Frequency of each digit of a Number :-

Program :-

import java.io.*;
import java.util.*;
class Digit
{
    public static void main(String args[])
    {
        Scanner in = new Scanner(System.in);
        int n,p,dig,i;
        int digit[] = new int[10];
        System.out.println("Enter Number");
        n = in.nextInt();
        p=n;
        while(p>0)
        {
            dig = p%10;
            for(i=0;i<=9;i++)
            {
                if(dig==i)
                {
                    digit[i]++;
                }
            }
            p=p/10;
        }
        System.out.println("Original Number : "+n);
        for(i=0;i<=9;i++)
        {
            if(digit[i]!=0)
            {
                System.out.println("Frequency of "+i+" is : "+digit[i]);
            }
        }
    }// end of main method
}// end of class


Program to count & display Frequency of a particular digit of a Number :-

Program :-

import java.io.*;
import java.util.*;
class Digit
{
    public static void main(String args[])
    {
        Scanner in = new Scanner(System.in);
        int n,p,dig,i,digit,c=0;
        System.out.println("Enter Number");
        n = in.nextInt();
        p=n;
        System.out.println("Enter Digit whose frequency is required");
        digit = in.nextInt();
        while(p>0)
        {
            dig = p%10;
            if(dig==digit)
            {
                c++;
            }
            p=p/10;
        }
        System.out.println("Original Number : "+n);
        System.out.println("Frequency of "+digit+" is : "+c);
    }// end of main method
}// end of class

 

For Proper Understanding Watch the Video :-




All the best :)
Keep Learning :)

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