Recursion for Coding Interviews in JavaScript/

...

/

Solution Review: Sum of Digits in a String

Solution Review: Sum of Digits in a String

This review provides a detailed analysis of the solution to find the sum of digits in a string.

We'll cover the following...

Solution: Using Recursion

Javascript (babel-node)
function sumDigits(testVariable) {
  // Base case
  if (testVariable === "") {
    return 0;
  }
  // Recursive case 
  else {
    return Number(testVariable[0]) + sumDigits(testVariable.substr(1));
  }
}
// Driver Code
myString = "345";
console.log(sumDigits(myString));

Explanation

The solution to this problem is similar to the solution of finding the ...