JavaScript: Check a given number is self-dividing or not

JavaScript Math: Exercise-114 with Solution

Check Self-Dividing Number

Write a JavaScript program that checks if a given number is self-dividing.

In mathematics, a self-dividing number is one that can be divided by every digit (except digit zero) within it.

Test Data:
(48) -> true
(22) -> true
(63) -> false

Sample Solution:

JavaScript Code:

/**
 * Function to check if a number is self-dividing or not.
 * @param {number} n - The number to be checked.
 * @returns {boolean} - True if the number is self-dividing, false otherwise.
 */
function test(n) {
    i = n; // Initialize i to n
    num = i; // Store the value of n in num
    flag = true; // Initialize flag to true
    while (num > 0) { // Loop through each digit of the number
        mod = num % 10; // Get the last digit of num
        if (i % mod !== 0) { // Check if i is divisible by mod
            flag = false; // If not, set flag to false
        }
        num = Math.floor(num / 10); // Remove the last digit from num
    }
    return flag; // Return the value of flag indicating if the number is self-dividing or not
}

// Test cases
n = 48;
console.log("n = " + n);
console.log("Check the said number is self-dividing or not: " + test(n));
n = 22;
console.log("n = " + n);
console.log("Check the said number is self-dividing or not: " + test(n));
n = 63;
console.log("n = " + n);
console.log("Check the said number is self-dividing or not: " + test(n));

Output:

n = 48
Check the said number is self-dividing or not: true
n = 22
Check the said number is self-dividing or not: true
n = 63
Check the said number is self-dividing or not: false

Flowchart:

Live Demo:

See the Pen javascript-math-exercise-114 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that checks if every non-zero digit of a number divides the number evenly.
• Write a JavaScript function that converts a number to a string and verifies that each digit (ignoring zero) is a divisor of the number.
• Write a JavaScript function that iterates through the digits of a number and returns true if all non-zero digits are factors.
• Write a JavaScript function that validates input and handles special cases, such as numbers containing zeros, appropriately.

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