Codefights

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Add Two Digits

Description

You are given a two-digit integer n. Return the sum of its digits.

Example

For n = 29, the output should be addTwoDigits(n) = 11.

Input/Output

  • [execution time limit] 4 seconds (js)

  • [input] integer n

    A positive two-digit integer.

    Guaranteed constraints:
    10 \leq n \leq 99.

  • [output] integer

    • The sum of the first and second digits of the input number.

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
    console.log("This prints to the console when you Run Tests");
    return "Hello, " + name;
}

Solution

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function addTwoDigits(n) {
	return String(n).split('').map(Number).reduce((a, b) => a + b);
}