function suffle(arr) {

    const len = arr.length;

    for (let i = len - 1; i >= 0; i--) {

        const j = Math.floor(Math.random() * (i + 1));

        [arr[i], arr[j]] = [arr[j], arr[i]];

    }

    return arr;

}

​

​

var obj = [];

for (let i = 0; i < 100; i++) {

    obj.push({

        [i]: i,

        [i + 1]: i + 1,

        [i + 2]: i + 2,

        [i + 3]: i + 3

    });

}

​

​

var num = [];

for (let i = 0; i < 100; i++) {

    num.push(i);

}