Product Management

Create an array of 256, the amount of valid ASCII characters, and initialize each value to -1.
Loop through each character in the input string.
Using the character as an index in the indices array, if the value is -1, you are seeing it for the first time. In that case, set it to the current loop index.
If the value isn’t -1, you have processed this character before, so mark this with -2.
Loop through the indices array and find the smallest value (this is the index in the string), this is your first non-repeating character.

program:
int[] indices = new int[256];

for (int i = 0; i < 256; i++)
  indices[i] = -1;

for(int i = 0; i < input.Length; i++)
{
  var c = input[i];
  if (indices[c] == -1)
      indices[c] = i;
  else
      indices[c] = -2;
}

int firstNonRepeatingIndex = Int32.MaxValue;
foreach (var index in indices)
  if (index >= 0)
      firstNonRepeatingIndex = Math.Min(firstNonRepeatingIndex, index);

Re-order the strings alphabetically and then compare the two strings.

string a = "abcd";
string b = "bcda";

bool AreAnagrams(string inputA, string inputB)
{
  // We reorder the strings alphabetically
  var orderedA = String.Concat(inputA.ToLower().OrderBy(c => c));
  var orderedB = String.Concat(inputB.ToLower().OrderBy(c => c));
 
  // Now if they contain the same letters, they should be the exact same string
  return orderedA == orderedB;
}

“In Place” normally means without allocating any further memory. In this case, it is literally impossible to remove something “In Place,” as removing this would reduce the array size. Here’s how you can do this without a secondary array:

Sort the array by ascending value order. This will place duplicates next to each other.
Loop through the array from back to front. This is necessary to allow you to reduce it in size while iterating.
Track the current value until you find a different one while keeping track of the count of the same value up to this point.
If you find a new value or reach the start of the array, use the count to remove the duplicates using swap-back and resize. To do this, swap the unwanted value with the last value in the array and then resize the array down by 1.
All duplicates have been removed, but it is no longer a sorted array. 

int[] array = { 5, 2, 1, 5, 8, 5, 1, 7, 7, 0 };

// First sort the array
Array.Sort(array);

int current = array[^1];
int duplicateCount = -1;

for(var i = array.Length-1; i >= 0; i--)
{
  if (array[i] != current || i == 0)
  {
      // We found a new value or are at the end, so remove duplicates up to this point
      int startIndex = i + 1;
      for (int j = startIndex; j < startIndex+duplicateCount; j++)
      {
          array[j] ^= array[^1];
          array[^1] ^= array[j];
          array[j] ^= array[^1];
         
          Array.Resize(ref array, array.Length - 1);
      }
     
      // Reset count and current
      current = array[i];
      duplicateCount = 0;
      continue;
  }
 
  duplicateCount++;
}

foreach(var val in array)

Answer: Nodes in a binary tree that have children are referred to as interior nodes. When a node has no children (and therefore is a dead end), it’s called a leaf node. A leaf node signifies the end of a branch and lets the computer know that it doesn’t need to be processed any further.

Answer: Object-oriented programming (OOP) has been the dominant paradigm for decades, though it is debated whether this was due to merit or chance. In more recent years, data-oriented programming (DOP) has also gained popularity and can be used to great effect in many areas. However, rather than saying one paradigm is better than the other, it is more accurate to say that there are pros and cons to both.

Answer: Searching is the act of checking for and retrieving a specific data element, whereas sorting rearranges multiple data elements in an array or list into some kind of order.

Answer: My dominant programming language is my favourite as since I've spent so much time with it. I've a passion for the language I’ll be working with. You can, however, also give an honorable mention to another language. What Is the Most Difficult Project You’ve Encountered on Your Learning Journey?Not everyone finds the same things difficult, and there is no right or wrong when it comes to your own personal strengths and weaknesses. With this in mind, it’s perfectly acceptable to be honest here, and it’s much more likely to produce an interesting answer than a template answer. My answer: In accordance, to me I feel neural networks just the crucks of it, just the algorithm gave me chills down my throat. Whereby, the most challenging one throughout my university days was obviously the variations of the machine learning and algortihms.

This question was a blend of algorithms, coding and aptitude too.

My answer: A countdown timer tracks the years, months, days, hours, and seconds until an event occurs. This use cases shall tests to create a date field, optional time, and a start button as a helper.

A loop (or cycle) in a linked list is when a node’s next value points back to an earlier node in the list.

Create a hash set of nodes. You will use this to track whether or not you have already processed a node.
Iterate the linked list, adding each node to the hash set.
If the node is already present in the hash set, then the linked list contains a loop (or cycle).
bool ContainsLoop(LinkedList linkedList)
{
  HashSet nodeVisitSet = new HashSet();

  var node = linkedList.head;
  while (node != null)
  {
      // If it's there, we already visited so this is a loop
      if (nodeVisitSet.Contains(node))
          return true;

      nodeVisitSet.Add(node);

      node = node.next;
  }

  return false;
}

The objective of the Recipe app is to help the user manage recipes in a way that will make them easy to follow.

use case:
For the initial version of this app, the recipe data may be encoded as a JSON file. After implementing the initial version of this app you may expand on this to maintain recipes in a file or database.

User Stories
User can see a list of recipe titles
User can click a recipe title to display a recipe card containing the recipe title, meal type (breakfast, lunch, supper, or snack), number of people it serves, its difficulty level (beginner, intermediate, advanced), the list of ingredients (including their amounts), and the preparation steps.
User click a new recipe title to replace the current card with a new recipe.

Bonus features
User can see a photo showing what the item looks like after it has been prepared.
User can search for a recipe not in the list of recipe titles by entering the meal name into a search box and clicking a ‘Search’ button. Any open source recipe API may be used as the source for recipes (see The MealDB below).
User can see a list of recipes matching the search terms
User can click the name of the recipe to display its recipe card.
User can see a warning message if no matching recipe was found.
User can click a ‘Save’ button on the cards for recipes located through the API to save a copy to this apps recipe file or database.

Answer: AI is quickly transforming the workforce, particularly for product teams.My opportunity for the adaptability to change and have confidence yet to integrate new technologies into my work. Highlight ways AI can make product managers faster, more efficient, and more creative (be careful not to sound overly reliant on it to do your work, though). If possible, cite specific instances when we use AI.

Answer : It'll give me an opportunity to demonstrate my nuanced understanding of product teams’ competing priorities and demands. Whereby, with my key skills in sql, data structures and algorithms, machine learning and operating systems. Whereby, an opportunity to demonstrate my ability and influence your decision into this field of industry.

Answer: I have been following your company’s successes for some time now and I know you have a great software development team. I was thinking that this would be the best environment for me to apply the skills I acquired during my internship and Master’s degree. I thought it was finally time to try my hand. I have experience in web development and I’m really interested in the projects you’re mentioning in the job ad – in fact, one of them was the subject of my thesis. I really think I’m a good fit for the job and can grow even more in your workplace.

Answer: First, the job description itself was very well-written and gave me a good idea of what the role was about. Second, I really liked the fact that this development cum product  role involves collaboration with others. I love collaboration and working with data, but I don’t want to sit at my desk to look at numbers all day – I want to have the chance to work as part of a team where we can exchange opinions and knowledge of new data methods and organize the company development department in the best way possible.

Answer: I know that your company products and services in terms of business intelligence and hospitality organization. Actually, I used your brand demographics when I was working at a hotel chain a couple of years ago. I was really impressed with how high-quality and durable that UI interface was. I also saw your company has recently opened a new data branch, a good sign for your company’s success.