Special thanks to@jianchao.li.fighterfor adding this problem and creating all test cases. 给n个数,0到n之间有一个数字缺失了,让找到这个缺失数字。要求线性时间复杂度和常数级的额外空间复杂度。 解法1:排序,然后二分查找。此题数组不是排序的,所以适合。但面试时,如果问道要知道。 解法2:求差值,用0~n...
classSolution {public:intmissingNumber(vector<int>&nums) {intn =nums.size();intsum1 = n * (n +1) /2;intsum2 = accumulate(nums.begin(), nums.end(),0);returnsum1 -sum2; } }; 解法4:结合题目Single Number可以想到基于位操作的解法:将输入数组与[0,n]异或,最后得到的值即是缺失的那个。
Can you solve this real interview question? Missing Number - Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array. Example 1: Input: nums = [3,0,1] Output: 2 Expl
int missingNumber(vector<int>& nums) { int ret = nums.size(); for (int i = 0; i < nums.size();i++) { ret = ret ^ i ^ nums[i]; } return ret; } 参考: https://discuss.leetcode.com/topic/24535/4-line-simple-java-bit-manipulate-solution-with-explaination查看...
The problem No.1306 has not been added on Leetcode! Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Assignees No one assigned Labels None yet Projects None yet Milestone No milestone Development No branches or pull requests 1 partic...
The problem No.1304 has not been added on Leetcode!Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Assignees No one assigned Labels None yet Projects None yet Milestone No milestone Development No branches or pull requests 1 particip...
Output: 8 Note: Your algorithm should run in linear runtime complexity. Could you implement it using only constant extra space complexity? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 classSolution(object): defmissingNumber(self, nums):
Special thanks to@jianchao.li.fighterfor adding this problem and creating all test cases. 查找0~n缺失的数。 首先可以先对数组排序,然后线性查找。时间复杂度是O(nlogn + n),不满足题意但是也可以AC。 publicclassSolution {publicintmissingNumber(int[] nums) { ...
The problem No.1267 has not been added on Leetcode!Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Assignees No one assigned Labels None yet Projects None yet Milestone No milestone Development No branches or pull requests 1 particip...
LeetCode Username endlesscheng Problem Number, Title, and Link Minimum Weighted Subgraph With the Required Paths https://leetcode.com/problems/minimum-weighted-subgraph-with-the-required-paths/description/ Bug Category Missing test case ...