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Problem: Intersection of Two Arrays

easy
15 min
Explore how to solve the problem of finding the unique intersection of two arrays by leveraging hash maps. This lesson helps you understand the problem constraints, apply hash map logic to identify unique elements, and implement an efficient coding solution.

Statement

You are given two integer arrays, arr1 and arr2. Your task is to return a new array containing the intersection of both arrays.

  • Each element in the result must be unique.

  • The order of the elements in the result does not matter.

Constraints

  • 11 \leq arr1.length, arr2.length 1000\leq 1000

  • 00 \leqarr1[i], arr2[i] 1000\leq 1000

Tap here to switch tabs
Problem
Ask
Submissions

Problem: Intersection of Two Arrays

easy
15 min
Explore how to solve the problem of finding the unique intersection of two arrays by leveraging hash maps. This lesson helps you understand the problem constraints, apply hash map logic to identify unique elements, and implement an efficient coding solution.

Statement

You are given two integer arrays, arr1 and arr2. Your task is to return a new array containing the intersection of both arrays.

  • Each element in the result must be unique.

  • The order of the elements in the result does not matter.

Constraints

  • 11 \leq arr1.length, arr2.length 1000\leq 1000

  • 00 \leqarr1[i], arr2[i] 1000\leq 1000