can u solve this question? with bit manipulation in constant extra space and linear time complexity
▎Title: 137. Single Number II
Difficulty: Medium
Denoscription:
Given an integer array
You must implement a solution with a linear runtime complexity and use only constant extra space.
Example 1:
Input:
Output:
Example 2:
Input:
Output:
Constraints:
•
•
• Each element in
▎Title: 137. Single Number II
Difficulty: Medium
Denoscription:
Given an integer array
nums where every element appears three times except for one, which appears exactly once, find the single element and return it.You must implement a solution with a linear runtime complexity and use only constant extra space.
Example 1:
Input:
nums = [2,2,3,2] Output:
3Example 2:
Input:
nums = [0,1,0,1,0,1,99] Output:
99Constraints:
•
1 <= nums.length <= 3 * 10^4•
-2^31 <= nums[i] <= 2^31 - 1• Each element in
nums appears exactly three times except for one element which appears once.❤3
🚨 16 Billion Logins Leaked in Historic Data Breach
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Cybersecurity researchers have uncovered one of the largest breaches ever. Over 16 billion login credentials—including social media, corporate, VPN, and email accounts—have been leaked online. The data is recent and weaponizable, gathered through malware from unsecured databases. It includes:
* Usernames, passwords, and URLs
* Apple accounts, Telegram-linked accounts, and more
* Datasets originating from the Russian Federation
Experts warn this leak is a blueprint for mass exploitation, enabling identity theft, phishing, and account takeovers.
Check if your email was exposed:
Using this link
Protect yourself now:
* Enable Two‑Factor Authentication (2FA)
* Use a password manager
* Rotate your passwords regularly
Stay safe.
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📢 Official Call for Teams: ETCPC 2025 Registration Now Open! 🎓💻
The 10th Ethiopian Collegiate Programming Contest (ETCPC 2025) is officially accepting team registrations. This is your opportunity to represent Addis Ababa University in Ethiopia's most prestigious coding competition.
Competition Details:
📅 Date: August 3–4, 2025
⏳ Registration Deadline: Sunday, Midnight 12:00 AM
👥 Team Composition: 3 students per team
RSVP HERE: Register now and secure your spot.
📍 Important Notes:
✔️ Only fully registered teams will be accepted
✔️ Official rules & details will be emailed after signup
✔️ All members must be eligible AAU students
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