文件: root - text - article - 2019 - 11 - first-missing-positive-integer.txt
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标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 412 次阅读, 21275 次搜索 | 89 个单词
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Hi, here's your problem today. This problem was recently asked by Facebook:
You are given an array of integers. Return the smallest positive integer that is not present in the array. The array may contain duplicate entries.
For example, the input [3, 4, -1, 1] should return 2 because it is the smallest positive integer that doesn't exist in the array.
Your solution should run in linear time and use constant space.
Here's your starting point:
标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 412 次阅读, 21275 次搜索 | 89 个单词 You are given an array of integers. Return the smallest positive integer that is not present in the array. The array may contain duplicate entries.
For example, the input [3, 4, -1, 1] should return 2 because it is the smallest positive integer that doesn't exist in the array.
Your solution should run in linear time and use constant space.
Here's your starting point:
def first_missing_positive(nums):
# Fill this in.
print first_missing_positive([3, 4, -1, 1])
# 2
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