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JavaScript Program to Check Disarium Number

Updated on Oct 30, 2024
By Mari Selvan
πŸ‘οΈ 52 - Views
⏳ 4 mins
πŸ’¬ 1 Comment
JavaScript Program to Check Disarium Number

Photo Credit to CodeToFun

πŸ™‹ Introduction

In the realm of programming, exploring mathematical patterns is a fascinating endeavor. One such numeric pattern is the Disarium number.

A Disarium number is a number defined by the sum of its digits each raised to the power of its respective position.

In this tutorial, we'll delve into a JavaScript program designed to check whether a given number is a Disarium number.

πŸ“„ Example

Let's explore the JavaScript code that checks whether a given number is a Disarium number.

isDisarium.js
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// Function to count the number of digits in a given number
function countDigits(number) {
  return String(number).length;
}

// Function to check if a number is a Disarium number
function isDisarium(number) {
  const originalNumber = number;
  let digitCount = countDigits(number);
  let sum = 0;

  while (number !== 0) {
    const digit = number % 10;
    sum += Math.pow(digit, digitCount);
    digitCount--;
    number = Math.floor(number / 10);
  }

  return sum === originalNumber;
}

// Driver program
// Replace this value with your desired number
const inputNumber = 89;

// Check if the number is Disarium
if (isDisarium(inputNumber)) {
  console.log(`${inputNumber} is a Disarium number.`);
} else {
  console.log(`${inputNumber} is not a Disarium number.`);
}

πŸ’» Testing the Program

To test the program with different numbers, replace the value of inputNumber in the code.

Output
89 is a Disarium number.

Run the script to check if the number is a Disarium number.

🧠 How the Program Works

  1. The program defines a function countDigits to count the number of digits in a given number.
  2. The isDisarium function checks if a number is a Disarium number by summing the digits each raised to the power of its position.
  3. The driver program tests the isDisarium function with a sample number (replace it with your desired number).

πŸ“ Between the Given Range

Let's explore the JavaScript code that checks for Disarium numbers in the specified range.

isDisariumNumber.js
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// Function to check if a number is a Disarium number
function isDisariumNumber(num) {
  const numStr = num.toString();
  let sum = 0;

  for (let i = 0; i < numStr.length; ++i) {
    sum += Math.pow(parseInt(numStr[i]), i + 1);
  }

  return sum === num;
}

// Function to find Disarium numbers in the range 1 to 100
function findDisariumNumbersInRange() {
  const disariumNumbers = [];

  for (let i = 1; i <= 100; ++i) {
    if (isDisariumNumber(i)) {
      disariumNumbers.push(i);
    }
  }

  return disariumNumbers;
}

// Driver program
const disariumNumbersInRange = findDisariumNumbersInRange();
console.log("Disarium numbers in the range 1 to 100:");
console.log(disariumNumbersInRange.join(" "));

πŸ’» Testing the Program

Output
Disarium numbers in the range 1 to 100:
1 2 3 4 5 6 7 8 9 89

Run the script to see the Disarium numbers in the range from 1 to 100.

🧠 How the Program Works

  1. The program defines a function isDisariumNumber that checks if a given number is a Disarium number based on the defined condition.
  2. It also defines a function findDisariumNumbersInRange that iterates through numbers from 1 to 100 and identifies Disarium numbers.
  3. The main section calls these functions and prints the Disarium numbers in the specified range.

🧐 Understanding the Concept of Disarium Numbers

Before we dive into the code, let's grasp the concept of Disarium numbers.

A Disarium number is a number such that the sum of its digits, each raised to the power of its position, equals the number itself.

For example, the number 89 is a Disarium number because 8^1 + 9^2 equals 89.

πŸŽ‰ Conclusion

Understanding and implementing programs to identify numeric patterns, such as Disarium numbers, is a valuable skill in the world of programming.

The provided javascript program offers a practical example of checking whether a given number follows the Disarium pattern.

Feel free to use and modify this code for your specific use cases. Happy coding!

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Author

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πŸ‘‹ Hey, I'm Mari Selvan

For over eight years, I worked as a full-stack web developer. Now, I have chosen my profession as a full-time blogger at codetofun.com.

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Mari Selvan
Mari Selvan
10 months ago

If you have any doubts regarding this article (JavaScript Program to Check Disarium Number), please comment here. I will help you immediately.

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