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
在CareerCup中有一道类似的题,5.7 Find Missing Integer 查找丢失的数,但是那道题不让我们直接访问整个int数字,而是只能访问其二进制表示数中的某一位,强行让我们使用位操作Bit Manipulation来解题,也是蛮有意思的一道题。 LeetCode All in One 题目讲解汇总(持续更新中...)...
然后求出数组实际的和,相减就能求出缺失的数字。 intLeetCode::missingNumber(vector<int>&nums){intsum =0,sumn =0;//sum是数组的和,sumn是[0,n]的和intmax = nums.size();//数组的最大值for(auto i : nums)sum += i;//求和sumn = max*(max +1) /2;returnsumn -sum; } 题目:Add Digit...
https://leetcode.com/problems/missing-number/?tab=Description 先介绍一个运用bit操作的算法。首先下标肯定是0到n-1,值是0到n少一个,那么把下标和值一起做xor,最后再和n做xor,缺失的值只出现了一次,其余都是两次。结果就是缺失的值。利用xor操作找出现奇数次的数字。类似思路在single number...
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题目链接:https://leetcode.com/problems/missing-number/ 题目: n distinct numbers taken from0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums =[0, 1, 3]return2. Note: Your algorithm should run in linear runtime complexity. Could you implement ...
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Missing Number https://leetcode.com/problems/missing-number/ 给定一个数组,长度为n,包含0~N的整数,但是缺少一个整数,找出缺少的这个整数(Your algorithm should run in linear runtime complexity. Could you implement it using only constant extra space complexity?)...
LC-268 Missing Number # xorclassSolution(object):defmissingNumber(self,nums):""" :type nums: List[int] :rtype: int """xor,i=0,0whilei<len(nums):xor=xor^i^nums[i]i+=1returnxor^i# sumclassSolution(object):defmissingNumber(self,nums):"""...
LeetCode之Missing Number 简介:LeetCode之Missing Number 1、题目 Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2....