Arista networks | SDE 3 | Rejected

The interviewer directly reached through some channel,
Supposed to have 3 rounds

1. Tech Discussion/ DSA
2. System Design
3. Hiring Manager

Got Rejected in first round itself

1. https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/description/

Gave the sort a copy array and HashMap based solution
ran through given test successful

2. Remove all subtrees where all node values are 0

   public static TreeNode remove(TreeNode root) {
   if (root == null) return null;

    root.left = remove(root.left);
    root.right = remove(root.right);
    if (root.val == 0 && root.left == null && root.right == null) {
        return null;
    }
    return root;

   }

   the interviewer was satisfied

Verdict: Rejected

Rant: WhyTF these interviewers want everything perfect seemless, I even dont know what i did wrong, If this continue i ll leave all ethics and will use AI and just push the most optimzed solution in first place itself.