The code seems fine to me. However, there's an issue with the initialization of the result variable on line no. 69. It's initialized to null, and later, calculations are performed on it. This will result in NaN because you cannot perform mathematical operations on null. You should initialize it to 0.

let result = 0

The code looks fine to me. Good to go!

Now its fine! Great work, keep it up!

Looks fine. It should be noted that this uses the Laplace method, which is not optimal. The extreme O(n!) time complexity must be mentioned. (The optimal approach is to first apply Gaussian elimination (but being careful with swapping or scaling rows, which affects the determinant), then the determinant is just the product along the diagonal with the appropriate sign).

Hey @appgurueu I have modified the code as requested.

• Made the note of the Laplace expansion and time complexity
• Remove unnecessary else statements
• Use throw and catch for errors
• Use not (!) operator instead of (=== false) comparison

@appgurueu I have seperated the test cases.