---
# System prepended metadata

title: 260-Single number III
tags: [Medium]

---

# 260-Single number III
###### tags: `Medium`

* Question:https://leetcode.com/problems/single-number-iii/

* Key:
1.XOR
2.Hashtable

* Reference:
https://leetcode.com/problems/single-number-iii/discuss/1338383/C%2B%2B-Bitwise-Solution-O(N)