function insertionSort(arr) {
  for (let i = 1, n = 1; i < arr.length; i++) {
    n = i - 1;
		let current = arr[i]
		while(n >= 0 && arr[n] > current ) {
      let sibling = arr[n];
			arr[n] = current;
			arr[n+1] = sibling;
			n--;
    }
  }
	return arr;
}

// TODO: Create method objectFreeze which works the same as native Object.freeze.
// !IMPORTANT: You haven't use Object.freeze during your task

function objectFreeze(obj) {
	[	...Object.getOwnPropertyNames(obj), 
		...Object.getOwnPropertySymbols(obj)
	].forEach(item => {
    const descriptor = Object.getOwnPropertyDescriptor(obj, item);
	  if ( !descriptor.get || !descriptor.set) {
      Object.defineProperty(obj, item, {
          configurable: false,
          writable: false	
      })
    }
  })

	return obj;
}