3616. Number of Student Replacements

You are given an integer array ranks where ranks[i] represents the rank of the ith student arriving in order. A lower number indicates a better rank.

Initially, the first student is selected by default.

A replacement occurs when a student with a strictly better rank arrives and replaces the current selection.

Return the total number of replacements made.

class Solution {
public:
    int totalReplacements(vector<int>& ranks) {
        int best = ranks[0], res = 0;
        for(int i = 1; i < ranks.size(); i++) {
            if(best > ranks[i]) {
                best = ranks[i];
                res++;
            }
        }
        return res;
    }
};