Autobiographical Number in Java1 min read

In this tutorial, we will write an Autobiographical Number Program in Java and also learn what is Autobiographical Number.

Autobiographical Number

An autobiographical number is a number such that the first digit of it counts how many zeroes are there in it, the second digit counts how many ones are there and so on. Basically, it counts the frequency of digits from 0 to 9 in order which they occur in a number.

Example: 1210 has 1 zero, 2 ones, 1 two and 0 threes.
Some other examples include 2020, 21200, 3211000, 42101000, etc.

Explanation: Consider a number, 21200.

First, sum of the digits: 2+1+2+0+0 = 5
Second, count the number of digits: 5
Since sum of the digits is equal to the number of digits present in a number. Therefore, 21200 is an autobiographical number.

Java Program to check if the given number is Autobiographical Number or not



Java Program to check Krishnamurthy Number

In this tutorial, we will learn about Krishnamurthy numbers and write a Krishnamurthy Number program in Java. We will write two programs for Krishnamurthy number …
Read More

Java Program for ISBN Number

In this tutorial, we will learn about the ISBN (International Standard Book Number) and write a program to check for the ISBN Number in Java …
Read More

C++ Memory Management

Memory management refers to the process of managing the computer memory while assigning the space to the program’s variable to improve the overall performance. Requirement …
Read More

C++ Pointer to Pointer

As we know by now that a pointer stores the address of the pointed variable. But it is not the only use, pointer also stores …
Read More

C++ Passing Pointers to Functions

A function is a user-defined block of codes that executes some specific task assigned to it invoked by its name. If there is an argument …
Read More

C++ Null Pointer

We use a null pointer when we do not have the exact address to assign to a pointer. It is considered a good practice and …
Read More