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Given a non-empty array of integers, every element appears
twice except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implement it without using
extra memory?
Example 1:
Input: [2,2,1]
Output: 1
Example 2:
Input: [4,1,2,1,2]
Output: 4
Difficulty:
Easy
Lock:
Normal
All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.