moveOnesToMiddle([1, 2, 3, 1, 4, 1]); // [ 2, 1, 1, 1, 3, 4 ]

moveOnesToMiddle([1, 2, 3, 4, 5]); // [2, 3, 1, 4, 5]

moveOnesToMiddle([5, 1, 1, 1, 6, 7]); // [ 5, 1, 1, 1, 6, 7 ]

moveOnesToMiddle([1, 0, 1, 2, 1, 3]); // [ 0, 1, 1, 1, 2, 3 ]

moveOnesToMiddle([8, 7, 1, 6, 1, 5]); // [ 8, 7, 1, 1, 6, 5 ]

moveOnesToMiddle([9, 1, 8, 1, 7, 1, 6]); // [9, 8, 1, 1, 1, 7, 6]

function moveOnesToMiddle(arr)

const ones = arr.filter((num) => num === 1).

;

const withoutOnes = arr.filter((num) => num !== 1);

const middleIndex = Math.floor(

);

const result = [

...withoutOnes.slice(0, middleIndex),

...Array(ones).

(1),

...withoutOnes.slice(middleIndex),

];

return result;

}