Struggling with Angular Interview Questions

Question

Hi everyone,

I'm new to Angular development and I'm struggling with interview questions related to the framework. I've read through all of the documentation and angular article and tutorials I can find but I still feel really lost when it comes to coding challenges.

For example, I was recently asked to write a function that takes two strings and returns the longest common substring between them. I wrote the following code, but it's not working correctly - can someone please help me figure out where I'm going wrong?

function longestCommonSubstring(string1, string2) {
  let longestSubstring = '';
 for (let i = 0; i < string1.length; i++) {
    for (let j = 0; j < string2.length; j++) {
      let currentSubstring = '';
      let k = 0;
 
      while (string1[i + k] === string2[j + k]) {
        currentSubstring += string1[i + k];
        k++;
      }
      if (currentSubstring.length > longestSubstring.length)