Array Subset
Discover how to create functions that determine if one array is a subset of another by examining each element's presence. Learn to handle duplicates and optimize for time and space complexity. Explore solutions using arrays, objects, and ES2015 Maps to manage different data types effectively.
We'll cover the following...
We'll cover the following...
Array Subset
Instructions
Write a function that accepts two parameters, both arrays. The arrays can have both strings and numbers. Return true if the second array is a subset of the first.
In other words, determine if every item in the 2nd array is also present somewhere in the 1st array.
Input: Array of Numbers & Strings, Array of Numbers & Strings
Output: Boolean
Examples
arraySubset([2, 1, 3], [1, 2, 3]); // -> true
arraySubset([2, 1, 1, 3], [1, 2, 3]); // -> true
arraySubset([1, 2], [1, 2, 3]); // -> false
arraySubset([1, 2, 3],