Skip to content

Practice Single Element in a Sorted Array

Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.

Medium#540
LeetCode Problem

Single Element in a Sorted Array

Problem Statement

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 element that appears only once. Your solution must run in O(log n) time and O(1) space.

Source: Single Element in a Sorted Array on LeetCode. Use the original task for its coding environment and submissions.

Examples

# Example 1

Input
nums = [1,1,2,3,3,4,4,8,8]
Output
2

# Example 2

Input
nums = [3,3,7,7,10,11,11]
Output
10

Constraints

1 <= nums.length <= 10^5
0 <= nums[i] <= 10^5

Related LeetCode Problems

Practice more problems similar to Single Element in a Sorted Array.

Review your practice with PhantomCodeAI

After trying the problem yourself, use the app to discuss your approach, complexity, and edge cases.