JavaScript: Find the armstrong numbers of 3 digits

JavaScript Conditional Statement and loops: Exercise-9 with Solution

3-Digit Armstrong Numbers

Write a JavaScript program to find the Armstrong numbers of 3 digits.

Note : An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, 371 is an Armstrong number since 3**3 + 7**3 + 1**3 = 371.

Visual Presentation:

Sample Solution:

JavaScript Code:

// Function to find and print three-digit Armstrong numbers
function three_digit_armstrong_number() {
    for (var i = 1; i < 10; ++i) {
        for (var j = 0; j < 10; ++j) {
            for (var k = 0; k < 10; ++k) {
                // Calculate the cube of each digit and sum them
                var pow = Math.pow(i, 3) + Math.pow(j, 3) + Math.pow(k, 3);
                // Calculate the number formed by the digits
                var plus = i * 100 + j * 10 + k;

                // Check if the sum of cubes is equal to the number
                if (pow === plus) {
                    console.log(pow);
                }
            }
        }
    }
}

// Call the function to find three-digit Armstrong numbers
three_digit_armstrong_number(); 

Output:

153
370
371
407

Flowchart:

Live Demo:

See the Pen javascript-conditional-statements-and-loops-exercise-9 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that identifies all 3-digit Armstrong numbers using string manipulation to split digits.
• Write a JavaScript function that finds 3-digit Armstrong numbers without converting numbers to strings.
• Write a JavaScript function that computes Armstrong numbers in the 3-digit range using array methods to calculate cube sums.
• Write a JavaScript function that returns 3-digit Armstrong numbers in sorted order after validating each candidate.

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