K5kC | Code & More
Computer Science
Algorithms
Programming Languages
Database
System Design
Problems
Blind 75
Difficulty: Easy
Difficulty: Medium
Difficulty: Hard
Videos
Projects
Android
Data Science
Computer Vision
Simulations
Tools
UUID Generator
Code Formatter
Search
⌘K
Contains Duplicate 1 - Check if array has duplicates
Copy title
Copy link
easy
Solve on LeetCode
10 Companies
Last edited: August 2, 2025
video explanation
Related Tags
count
duplicates-algo
hash-table
hashing
leetcode
video
Please enable JavaScript to view the
comments powered by Disqus.