JavaScript: Add two positive integers without carry

JavaScript Basic: Exercise-82 with Solution

Write a JavaScript program to add two positive integers without carrying.

Visual Presentation:

Sample Solution:

JavaScript Code:

// Function to add two integers without carrying
function add_two_int_without_carrying(n1, n2) {
    var result = 0, // Initialize the result
        x = 1; // Initialize the multiplier

    // Iterate while both numbers have digits
    while (n1 > 0 && n2 > 0) {
        result += x * ((n1 + n2) % 10); // Add the current digit without carrying
        n1 = Math.floor(n1 / 10); // Move to the next digit in the first number
        n2 = Math.floor(n2 / 10); // Move to the next digit in the second number
        x *= 10; // Update the multiplier for the next digit place
    }

    return result; // Return the final result
}

// Example usage
console.log(add_two_int_without_carrying(222, 911)); // Output: 133
console.log(add_two_int_without_carrying(200, 900)); // Output: 100

Output:

133
100

Live Demo:

See the Pen javascript-basic-exercise-82 by w3resource (@w3resource) on CodePen.

Flowchart:

ES6 Version:

// ES6 version with comments

// Function to add two integers without carrying
const add_two_int_without_carrying = (n1, n2) => {
    let result = 0; // Initialize the result
    let x = 1; // Initialize the place value

    // Continue until both numbers become zero
    while (n1 > 0 && n2 > 0) {
        // Add the sum of the last digits multiplied by the current place value to the result
        result += x * ((n1 + n2) % 10);
        // Update n1 and n2 by removing the last digit
        n1 = Math.floor(n1 / 10);
        n2 = Math.floor(n2 / 10);
        // Update the place value by multiplying it by 10
        x *= 10;
    }

    // Return the final result
    return result;
};

// Example usage
console.log(add_two_int_without_carrying(222, 911));
console.log(add_two_int_without_carrying(200, 900));

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