```js
// check if array is sorted
function isSorted(arr) {
var check = i =>
i == arr.length - 1 ? true : arr[i] > arr[i + 1] ? false : check(i + 1);
return check(0);
}
// generate a randomly filled array
var array = new Array();
(function createArray(size = 5) {
array.push(+(Math.random() * 100).toFixed(0));
return size > 1 ? createArray(size - 1) : undefined;
})(25);
var MinHeap = function() {
// change code below this line
// change code above this line
};
```
## Solution