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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 | 483 Views, 24693 Search Bots | 51 Words
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Hi, here's your problem today. This problem was recently asked by Google:
Given a list of numbers with only 3 unique numbers (1, 2, 3), sort the list in O(n) time.
Example 1:
Input: [3, 3, 2, 1, 3, 2, 1]
Output: [1, 1, 2, 2, 3, 3, 3]
Challenge: Try sorting the list using constant space.
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 | 483 Views, 24693 Search Bots | 51 Words Given a list of numbers with only 3 unique numbers (1, 2, 3), sort the list in O(n) time.
Example 1:
Input: [3, 3, 2, 1, 3, 2, 1]
Output: [1, 1, 2, 2, 3, 3, 3]
def sortNums(nums):
# Fill this in.
print sortNums([3, 3, 2, 1, 3, 2, 1])
# [1, 1, 2, 2, 3, 3, 3]
Challenge: Try sorting the list using constant space.
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