## DEV Community # Hackerrank Angry Professor Solutions

A Discrete Mathematics professor has a class of students. Frustrated with their lack of discipline, the professor
decides to cancel class if fewer than some number of students are present when class starts. Arrival times go
from on time (arrivalTime 0) to arrived late (arrivalTime > 0).
Given the arrival time of each student and a threshhold number of attendees, determine if the class is
cancelled.

## Python

``````def angryProfessor(k, a):
students = 0
for i in a:
if i <= 0: students += 1
if students < k: print("YES")
else: print("NO")

angryProfessor(3,[-1,-3,4,2])
``````

## JavaScript

``````function angryProfessor(k, a) {
let students = 0;
for (let i = 0; i < a.length; i++) {
if (a[i] <= 0) {
students++;
}
}
if (students < k) {
console.log("YES");
} else {
console.log("NO");
}
}

``````

## C++

``````#include <iostream>
using namespace std;

void angryProfessor(int k, int a[], int n) {
int students = 0;
for (int i = 0; i < n; i++) {
if (a[i] <= 0) {
students++;
}
}
if (students < k) {
cout << "YES" << endl;
} else {
cout << "NO" << endl;
}
}

``````