如何基于另一个子数组过滤数组的数组

Question

I am trying to filter an array of array, based on another subarray. I am giving example below to make the requirement more clear. Please note that order of filterArray is important. I can iterate myArrayofArray using for loop, and then compare the element of each iterated element with filterArray . But I think Filter can be used in this case to get the resultArray. But a bit confused, how I'll implement it.

myArrayofArray = [[1,0,2], [1,2,0], [1,3,4], [1,2,1]]
filterArray = [1,0]
resultArray = [1,0,2]

Answer 1

The easiest way would be

let result = myArrayofArray.filter { $0.starts(with: filterArray) }

This will return a [[Int]] with zero or more matching arrays.