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Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | Home Page | Category: Computing | 448 Views, 20537 Search Bots | 60 Words
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Hi, here's your problem today. This problem was recently asked by Facebook:
Given a list of numbers, where every number shows up twice except for one number, find that one number.
Example:
Input: [4, 3, 2, 4, 1, 3, 2]
Output: 1
Here's the function signature:
Challenge: Find a way to do this using O(1) memory.
Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Problem, Data Structures and Algorithms, | English | Home Page | Cateogry: Computing | 448 Views, 20537 Search Bots | 60 Words Given a list of numbers, where every number shows up twice except for one number, find that one number.
Example:
Input: [4, 3, 2, 4, 1, 3, 2]
Output: 1
Here's the function signature:
def singleNumber(nums):
# Fill this in.
print singleNumber([4, 3, 2, 4, 1, 3, 2])
# 1
Challenge: Find a way to do this using O(1) memory.
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