JS Basic
JS Interview Programs
- JS Interview Programs
- JS Abundant Number
- JS Amicable Number
- JS Armstrong Number
- JS Average of N Numbers
- JS Automorphic Number
- JS Biggest of three numbers
- JS Binary to Decimal
- JS Common Divisors
- JS Composite Number
- JS Condense a Number
- JS Cube Number
- JS Decimal to Binary
- JS Decimal to Octal
- JS Disarium Number
- JS Even Number
- JS Evil Number
- JS Factorial of a Number
- JS Fibonacci Series
- JS GCD
- JS Happy Number
- JS Harshad Number
- JS LCM
- JS Leap Year
- JS Magic Number
- JS Matrix Addition
- JS Matrix Division
- JS Matrix Multiplication
- JS Matrix Subtraction
- JS Matrix Transpose
- JS Maximum Value of an Array
- JS Minimum Value of an Array
- JS Multiplication Table
- JS Natural Number
- JS Number Combination
- JS Odd Number
- JS Palindrome Number
- JS Pascalβs Triangle
- JS Perfect Number
- JS Perfect Square
- JS Power of 2
- JS Power of 3
- JS Pronic Number
- JS Prime Factor
- JS Prime Number
- JS Smith Number
- JS Strong Number
- JS Sum of Array
- JS Sum of Digits
- JS Swap Two Numbers
- JS Triangular Number
JavaScript Program to find Number Combination
Photo Credit to CodeToFun
π Introduction
In the realm of programming, creating combinations of numbers is a common and useful task. A combination is a selection of items from a collection, where the order of selection does not matter.
In this tutorial, we'll explore a JavaScript program that efficiently generates combinations of two specified numbers within a given range.
π Example
Let's take a look at the JavaScript code that achieves this functionality.
// Function to calculate the number of digits in a number
function countDigits(num) {
let count = 0;
while (num !== 0) {
num = Math.floor(num / 10);
count++;
}
return count;
}
// Function to generate combinations of two numbers up to a specified limit
function generateCombinations(number1, number2, limit) {
console.log(`List of combinations of ${number1} and ${number2} up to ${limit}:`);
for (let i = 1; i <= limit; ++i) {
let currentNumber = i;
// Check if the current number contains only the specified digits
while (currentNumber > 0) {
const digit = currentNumber % 10;
if (digit !== number1 && digit !== number2) {
break;
}
currentNumber = Math.floor(currentNumber / 10);
}
// If the current number contains only the specified digits, log it
if (currentNumber === 0) {
process.stdout.write(`${i} `);
}
}
console.log();
}
// Driver program
// Replace these values with your desired numbers and limit
const targetNumber1 = 4;
const targetNumber2 = 8;
const combinationLimit = 500;
// Call the function to generate combinations
generateCombinations(targetNumber1, targetNumber2, combinationLimit);
π» Testing the Program
To test the program with different values, replace the values of targetNumber1, targetNumber2, and combinationLimit in the code.
List of combinations of 4 and 8 up to 500: 4 8 44 48 84 88 444 448 484 488
Run the script to see the list of combinations.
π§ How the Program Works
- The program defines a function countDigits to calculate the number of digits in a given number.
- The function generateCombinations generates combinations of two specified numbers up to a given limit.
- Inside the function, it iterates through numbers from 1 to the specified limit.
- For each iteration, it checks if the current number contains only the specified digits.
- If the condition is met, the current number is a combination, and it is logged.
π§ Understanding the Concept of Number Combination
Before delving into the code, let's take a moment to understand the concept of combinations. In mathematics, a combination is a selection of items from a collection, where the order of selection does not matter.
For example, consider the specified numbers as 4 and 8. The combinations of 4 and 8 up to 500 include 4, 8, 44, 48, 84, 88, 444, 448, 484, and 488.
π’ Optimizing the Program
While the provided program is effective, you can explore and implement optimizations based on specific requirements or constraints.
Feel free to incorporate and modify this code as needed for your specific use case. Happy coding!
π¨βπ» Join our Community:
Author
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.
Buy me a coffee to make codetofun.com free for everyone.
Buy me a Coffee
If you have any doubts regarding this article (JavaScript Program to find Number Combination), please comment here. I will help you immediately.