JavaScript-এ অবজেক্টের অ্যারে থেকে টপ n ম্যাক্স ভ্যালু বের করা

মান লিজিয়ে, আমাদের কাছে নিচের মতো একটি অবজেক্টের অ্যারে আছে:

const arr = [    {"id":0,"start":0,"duration":117,"slide":4,"view":0},    {"id":0,"start":0,"duration":12,"slide":1,"view":0},    {"id":0,"start":0,"duration":41,"slide":2,"view":0},    {"id":0,"start":0,"duration":29,"slide":3,"view":0},    {"id":0,"start":0,"duration":123,"slide":3,"view":0},    {"id":0,"start":0,"duration":417,"slide":2,"view":0},    {"id":0,"start":0,"duration":12,"slide":1,"view":0},    {"id":0,"start":0,"duration":67,"slide":2,"view":0} ];

আমাদের একটি ফাংশন লিখতে হবে যা এই অ্যারেটি গ্রহণ করে এবং টপ n এলিমেন্ট অন্য একটি অ্যারেতে রিটার্ন করবে (টপ মানে যেই অবজেক্টটি duration-এ সবচেয়ে বেশি ভ্যালু রাখে)।

তাহলে, এই সমস্যার কোড লিখি:

উদাহরণ

const arr = [    {"id":0,"start":0,"duration":117,"slide":4,"view":0},    {"id":0,"start":0,"duration":12,"slide":1,"view":0},    {"id":0,"start":0,"duration":41,"slide":2,"view":0},    {"id":0,"start":0,"duration":29,"slide":3,"view":0},    {"id":0,"start":0,"duration":123,"slide":3,"view":0},    {"id":0,"start":0,"duration":417,"slide":2,"view":0},    {"id":0,"start":0,"duration":12,"slide":1,"view":0},    {"id":0,"start":0,"duration":67,"slide":2,"view":0} ]; const topN = (arr, n) => {    if(n > arr.length){       return false;    }    return arr    .slice()    .sort((a, b) => {       return b.duration - a.duration    })    .slice(0, n); }; console.log(topN(arr, 3)); console.log(topN(arr, 4)); console.log(topN(arr, 5));

আউটপুট

কনসোলে আউটপুট হবে:

[    { id: 0, start: 0, duration: 417, slide: 2, view: 0 },    { id: 0, start: 0, duration: 123, slide: 3, view: 0 },    { id: 0, start: 0, duration: 117, slide: 4, view: 0 } ] [    { id: 0, start: 0, duration: 417, slide: 2, view: 0 },    { id: 0, start: 0, duration: 123, slide: 3, view: 0 },    { id: 0, start: 0, duration: 117, slide: 4, view: 0 },    { id: 0, start: 0, duration: 67, slide: 2, view: 0 } ] [    { id: 0, start: 0, duration: 417, slide: 2, view: 0 },    { id: 0, start: 0, duration: 123, slide: 3, view: 0 },    { id: 0, start: 0, duration: 117, slide: 4, view: 0 },    { id: 0, start: 0, duration: 67, slide: 2, view: 0 },    { id: 0, start: 0, duration: 41, slide: 2, view: 0 } ]