First Missing Positive && missing number https://leetcode.com/problems/first-missing-positive/ 我原以为数组中不会有重复的数字,所以利用min、max分别记录给定数组中出现的最小正整数和最大正整数{可以求出这之间的所有数值之和sum2=(min+max)*(max-min+1)/2},并且遍历给定数组,将所有正整数求和计入sum1...
public class Solution { public int missingNumber(int[] nums) { int res = 0; for(int i = 0; i <= nums.length; i++){ res ^= i == nums.length ? i : i ^ nums[i]; } return res; } } First Missing Positive Given an unsorted integer array, find the first missing positive int...
Smallest Missing Non-negative Integer After Operations Maximum Number of Integers to Choose From a Range II 参考资料: https://leetcode.com/problems/first-missing-positive/ https://leetcode.com/problems/first-missing-positive/discuss/17071/My-short-c++-solution-O(1)-space-and-O(n)-time LeetCo...
Leetcode class Solution: def missingNumber(self, nums: List[int]) -> int: ## 方法一:排序 # n = len(nums) # nums.sort() # for i in range(n): # if nums[i] != i: # return i # return n ## 方法二:哈希表 # hash = set(nums) # for i in range(len(nums) + 1): # i...
publicintfirstMissingPositive(int[]nums){intn=nums.length;//将正数移到前边,并且得到正数的个数intk=positiveNumber(nums);for(inti=0;i<k;i++){//得到要标记的下标intindex=Math.abs(nums[i])-1;if(index<k){//判断要标记的位置的数是不是小于 0,不是小于 0 就取相反数inttemp=Math.abs(nums...
C Code: //https://github.com/begeekmyfriend/leetcode/blob/master/041_first_missing_positive/missing_positive.c #include <stdio.h> #include <stdlib.h> static inline void swap_val(int *x, int *y) { int tmp = *x; *x = *y; *y = tmp; } static int first_Missing_Positive_num(in...
Demonstrate all the questions on LeetCode in the form of animation.(用动画的形式呈现解LeetCode题目的思路) - firstgod1/LeetCodeAnimation
[217. 存在重复元素](https://leetcode.cn/problems/contains-duplicate/) [219. 存在重复元素 II](https://leetcode-cn.com/problems/contains-duplicate-ii/) 第二十九课 [268. 丢失的数字](https://leetcode.cn/problems/missing-number/) [929. 独特的电子邮件地址](https://leetcode.cn/problems/uniqu...
Leetcode Cookbook - LeetCode in Go Golang Cultivation Road Getting started with the Go syntax tree Go Concurrency Patterns - Collection of Go Concurrency Patterns scenarios yezihack/algo - data structure and algorithmGuide[Uber Go Style Guide] (https://github.com/uber-go/guide) The Go programmi...
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 Example 3: Input: [7,8,9,11,12] Output: 1 Note: Your algorithm should run inO(n) time and uses constant extra space. ...