Solution: An Array as a Subset of Another Array
Understand how to check if one array is a subset of another using a set data structure for efficient lookups. Learn to improve time complexity from brute force to linear time by converting an array to a set and validating subset membership, enhancing your problem-solving skills for coding interviews.
Statement
Given two arrays, array1 and array2, implement a function that takes the two arrays as input and checks whether array2 is a subset of array1.
A subset is a set containing only elements present in another set.
Constraints:
-
array1.length -
array2.length