main.js

"use strict";
const STUDENT_OF_SCIENCE_CLUB = ['abc', 'cdf', 'efg', 'hij', 'klm'];
const STUDENT_OF_SPORTS_CLUB = ['nop', 'qrs', 'uvw', 'xyz', 'abc'];
function convertArrayToObject(studentsOfScienceClub) {
    let mapOfScienceStudents = {};
    for (let i = 0; i < studentsOfScienceClub.length; i++) {
        if (!mapOfScienceStudents[studentsOfScienceClub[i]]) {
            const student = studentsOfScienceClub[i];
            mapOfScienceStudents[student] = true;
        }
    }
    return mapOfScienceStudents;
}
function hasCommonStudentInBothClub(studentsOfScienceClub, studentsOfSportClub) {
    let mapOfScienceStudents = convertArrayToObject(studentsOfScienceClub);
    for (let i = 0; i < studentsOfSportClub.length; i++) {
        if (mapOfScienceStudents[studentsOfSportClub[i]]) {
            return true;
        }
    }
    return false;
}
let hasCommonStudent = hasCommonStudentInBothClub(STUDENT_OF_SCIENCE_CLUB, STUDENT_OF_SPORTS_CLUB);
console.log(hasCommonStudent);