Problem · Array

Search in a Rotated Sorted Array

MediumAmazonFULLTIMEONSITE INTERVIEW
See Amazon hiring insights

Problem statement

Given an integer array nums that was sorted in strictly increasing order and then rotated at an unknown pivot, and an integer target, return the index of target.

Return -1 when target does not appear in nums.

The problem statement continues
Pro

Examples

Example 1

nums = [4,5,6,7,0,1,2]target = 0return = 4

The target 0 appears at index 4.

FastPrep Pro
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
  • 2 more worked examples, 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
CodePython 3
Run and Submit unlock with Pro
FastPrep Pro
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
  • 2 more worked examples, 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