The First Time It Appears

The score 90 shows up several times on the sorted leaderboard — but who reached it FIRST in the rankings? 🏅

You get a SORTED list of nums (with repeats) and a target that appears at least once. Print the position of its FIRST appearance — and no fair scanning one by one!

Example:

Input: nums = [1, 4, 4, 4, 7, 9], target = 4 Output: 1

Binary search lands on a 4, then keeps checking the left half until it finds the earliest one, at position 1.