Can you solve this real interview question? Single Element in a Sorted Array - You are given a sorted array consisting of only integers where every element appears exactly twice, except for one element which appears exactly once. Return the single eleme
[LeetCode] 540. Single Element in a Sorted Array You are given a sorted array consisting of only integers where every element appears exactly twice, except for one element which appears exactly once. Find this single element that appears only once. Example 1: Input: [1,1,2,3,3,4,4,8,...
classSolution {public:intsingleNonDuplicate(vector<int>&nums) {intleft =0, right = nums.size() -1, n =nums.size();while(left <right) {intmid = left + (right - left) /2;if(nums[mid] == nums[mid +1]) {if((n -1- mid) %2==1) right =mid;elseleft = mid +1; }else{i...
力扣leetcode-cn.com/problems/single-element-in-a-sorted-array/ 题目描述 给定一个只包含整数的有序数组,每个元素都会出现两次,唯有一个数只会出现一次,找出这个数。 示例1: 输入: [1,1,2,3,3,4,4,8,8] 输出: 2 示例2: 输入: [3,3,7,7,10,11,11] 输出: 10 注意: 您的方案应该在 O...
Single Element in a Sorted Array 写在前面 二刷过程中出现的一道题目,简单的异或当然可以求出答案,但是并不会用到排序的性质,这种解法必然是不满足面试要求的。遇到已排序的数组,我们通常使用二分查找来解决问题,本题也是一样使用二分查找,只是稍作变形。 题目描述 Given a sorted array consisting of only ...
LeetCode-Single Element in a Sorted Array Description: Given a sorted array consisting of only integers where every element appears twice except for one element which appears once. Find this single element that appears only once. Example 1:...
【leetcode】540. Single Element in a Sorted Array 题目如下: 解题思路:题目要求时间复杂度是O(logN),可以尝试使用二分查找法。首先数组是有序的,而且仅有一个元素出现一次,其余均为两次。我们可以先找到数组最中间的元素,记为mid。如果mid和mid-1以及mid+1都不相同,那么mid就是single number。如果mid和mid-...
540. 有序数组中的单一元素 - 力扣(LeetCode)leetcode-cn.com/problems/single-element-in-a-sorted-array/ 题目描述: 给定一个只包含整数的有序数组,每个元素都会出现两次,唯有一个数只会出现一次,找出这个数。 示例1: 输入: [1,1,2,3,3,4,4,8,8] 输出: 2 示例2: 输入: [3,3,7,7,10,...
测试结果 给你一个仅由整数组成的有序数组,其中每个元素都会出现两次,唯有一个数只会出现一次。 请你找出并返回只出现一次的那个数。 你设计的解决方案必须满足O(log n)时间复杂度和O(1)空间复杂度。 示例1: 输入:nums = [1,1,2,3,3,4,4,8,8]输出:2 ...
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