REMOVING DUPLICATES FROM AN ARRAY | PROBLEM 41 | TOP 100 CODE | JAVA PROGRAMMING | INTERVIEW PREP

Publicado el: 05 febrero 2025
en el canal de: SheCodes

185

🚀 Remove Duplicates from an Array in Java | Java Coding Interview Question

Hey everyone! 👋 In this video, we’ll learn how to *remove duplicate elements from an array in Java* without using HashSet**! We’ll go through an efficient approach using **sorting and in-place modification**, ensuring we keep only unique elements while maintaining optimal performance.

*What You'll Learn in This Video?*
✅ How to sort an array in Java using `Arrays.sort()`
✅ In-place removal of duplicates using a single loop
✅ How to create a new array with only unique values
✅ *Time Complexity Analysis:* Understanding why this approach works efficiently

*Example Input & Output*
📝 *Input:* `{1, 1, 2, 3, 4, 2, 1, 6, 4}`
✅ *Output:* `{1, 2, 3, 4, 6}`

This method works in O(n log n) time complexity (due to sorting) and O(1) extra space , making it ideal for coding interviews and competitive programming.

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