Function backTrack

javascript/0207-course-schedule.js:51–57

(currCourse, graph, path)

};

var backTrack = (currCourse, graph, path) => {
    path[currCourse] = true;
    const _hasCycle = hasCycle(currCourse, graph, path);
    path[currCourse] = false;

    return _hasCycle;
};

var hasCycle = (currCourse, graph, path) => {
    for (const neighbor of graph[currCourse]) {