Given an unsorted integer array, find the first missing positive integer. For example, Given[1,2,0]return3, and[3,4,-1,1]return2. Your algorithm should run inO(n) time and uses constant space. 题意: 给定了一个无序数组,要求找到第一个缺失的正整数.如1,2,4,5的第一个缺失的正整数是...
Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. class Solution { publ...
Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. 思路:这个题刚開始是没有思路的,难就难在O(n)时间内常数量空间,所以此题较为考察...
Given an unsorted integer array, find the first missing positive integer. For example, Given[1,2,0]return3,and[3,4,-1,1]return2. Your algorithm should run in O(n) time and uses constant space. 一刷 题解: 找到第一个missing positive,要求O(n)。首先就想到了像sort colors一样的swap方法。
41. First Missing Positive Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space....
Given an unsorted integer arraynums, return the smallest missing positive integer. You must implement an algorithm that runs inO(n)time and uses constant extra space. Example 1: Input: nums = [1,2,0] Output: 3 Example 2: Input: nums = [3,4,-1,1] ...
Given an unsorted integer array, find the smallest missing positive integer. 给定一个未排序的整数数组,找出其中缺少的最小的正整数。 Example 1: Input: [1,2,0] Output: 3 Example 2: Input: [3,4,-1,1] Output: 2 Example 3: Input: [7,8,9,11,12] ...
First Missing Positive Loading...leetcode.com/problems/first-missing-positive/ Given an unsorted integer array, find the smallest missing positive integer. Example 1: Input: [1,2,0] Output: 3 Example 2: Input: [3,4,-1,1] Output: 2...
Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. 映射法 复杂度 时间O(N) 空间 O(1) ...
Given an unsorted integer array, find the first missing positive integer. For example, Given[1,2,0]return3, and[3,4,-1,1]return2. Your algorithm should run inO(n) time and uses constant space. 解法一:O(nlogn) time and O(1) space ...