K5kC | Code & More

Computer Science

Algorithms Programming Languages Database System Design

Blind 75 Difficulty: Easy Difficulty: Medium Difficulty: Hard

Android Data Science Computer Vision Simulations

UUID Generator Code Formatter

Intersection of Two Arrays 2 - Duplicates allowed

easy Solve on LeetCode

Problem
Examples
Follow ups
What if arrays are sorted
What if elements in nums2 cannot fit in memory
What if elements in both nums1 and nums2 cannot fit in memory
Solution
Method 1 - Frequency map
Code
Complexity
Method 2 - Sorting and two pointer scan
Code
Complexity

Similar Problems

Find First Intersection Point Between Two Sorted ArraysEasy
Intersection of Two Arrays 1 - Unique ElementsEasy
Intersection of Two Sorted ArraysMedium

Related Tags

array-algo binary-search external-sort hash-table hashing intersection leetcode two-array two-pointers

Continue Practicing

Find First Intersection Point Between Two Sorted ArraysEasy Intersection of Two Arrays 1 - Unique ElementsEasy Intersection of Two Sorted ArraysMedium

Privacy Disclaimer Report an Issue About

© 2026 K5kC | Code & More. All rights reserved.

चरैवेति चरैवेति | Keep moving on