Merge Lists in Order

Given two lists, merge them to one list and sort the new list in the same order as the first list.

Examples

merge_sort([1, 2, 3], [5, 4, 6]) ➞ [1, 2, 3, 4, 5, 6]

merge_sort([8, 6, 4, 2], [-2, -6, 0, -4]) ➞ [8, 6, 4, 2, 0, -2, -4, -6]

merge_sort([120, 180, 200], [190, 175, 130]) ➞ [120, 130, 175, 180, 190, 200]

Notes

• You'll always get two lists as arguments.
• The first list is always sorted, either asc or desc.