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Data Structures for Coding Interviews in Java

Challenge: An Array as a Subset of Another Array

Explore how to determine if one array is a subset of another using hash tables in Java. Understand unique element comparison and constraints while implementing an efficient solution to this coding challenge.

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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:

  • 1≤1 \leq array1.length ≤1
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