540. Single Element in a Sorted Array 题目大意: 给你一个由小到大排好序的数组,里面只有一个数出现了一次,其他数都出现了两次,要求找出那个只出现一次的数,而且时间复杂度为O(logn) 题目思路: 说实话一开始没想到,因为几乎每个数都出现了两次那么对于一个偶数i,一定有nums[i] == nums[i+1]否则说明在...
publicintsingleNonDuplicate(int[] nums) {intn =nums.length;if(nums.length <= 2)returnnums[0];if(nums[0] != nums[1])returnnums[0];if(nums[n - 1] != nums[n - 2])returnnums[n - 1];intl = 1, r = nums.length - 2, mid = 0;while(l <=r) { mid= (l + r) / 2;if...
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 integers where every element appears twice excep...【LeetCode】540. Single Element in a Sorted Array 题目描述 Given a sorted array consisting of only ...
[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,...
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: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Input: [1,1,2,3,3,4,4,8,8] Output: 2 Example ...
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: AI检测代码解析 Input: [1,1,2,3,3,4,4,8,8]
【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-...
D11Q3 Single element in sorted array.cpp +19 Original file line numberDiff line numberDiff line change @@ -0,0 +1,19 @@ 1 + As we are using binary search our TC: O(logN) 2 + 3 + class Solution { 4 + public: 5 + int singleNonDuplicate(vector<int>& nums) { 6...
Implement Function to Find Single Non-Duplicate Element in Sorted Array Task Write a function to find the single non-duplicate element in a sorted array. Acceptance Criteria All tests must pass. Su...
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 ...