Problem · Array

Single Element in a Sorted Array

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Problem statement

Given a sorted integer array nums, every value appears exactly twice except for one value that appears exactly once.

The problem statement continues
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Examples

Example 1

nums = [1,1,2,3,3,4,4]return = 2

Every value except 2 belongs to an adjacent pair.

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Reported in 1 Amazon interview this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 1 more worked example, explained
  • Guided hints and editorial
  • Run your code on real test cases
$9/month

Pro subscription, billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week