ProblemNest
Sign In
You are coding as a Guest. Sign in with Google in 1 tap to save your daily streak, lock in +50 XP & boost your college rank!
Save Streak (1-Tap Google)
9:00 AM Daily Incident ReleaseMaintaining a 7-day streak grants a 2.5× Recruiter Visibility Multiplier on the Recruiter Talent Radar.
Multiplier Ladder:1d: 1.0ו3d: 1.5ו7d: 2.5× MAX
🔥Search in Rotated Sorted Array: Displaced Binary SearchMedium
DAILY PROBLEM OF THE DAY+50 XP • Daily Streak

Solve today's challenge or tackle one of the 3 Super Hard challenges for +150 XP.

MediumBinary Search•Acceptance: 40.9%

Search in Rotated Sorted Array: Displaced Binary Search

Targeted in FAANG & Tech OA:GoogleAmazonMicrosoft
Real-World Engineering Context
Used in ring buffer circular queues, distributed DHT offset lookups, and chronological log partitions.
There is an integer array `nums` sorted in ascending order (with distinct values). Prior to being passed to your function, `nums` is possibly rotated at an unknown pivot index `k`. Given the array `nums` after the possible rotation and an integer `target`, return the index of `target` if it is in `nums`, or `-1` if it is not in `nums`. You must write an algorithm with `O(log n)` runtime complexity.

Sample Test Cases

Input: [[4,5,6,7,0,1,2],0]
Expected: 4
Input: [[4,5,6,7,0,1,2],3]
Expected: -1
Input: [[1],1]
Expected: 0

Constraints

  • 1 <= nums.length <= 5000
  • -10^4 <= nums[i] <= 10^4
  • All values of nums are unique.
  • nums is an ascending array that is possibly rotated.
  • -10^4 <= target <= 10^4
Verified Proof-of-Work ATS PortfolioCryptographic Verification
Export tamper-proof problem verifications to your direct ATS applications
DevScore: Unranked (0/1000)

Every verified problem solve writes authentic cryptographic proof-of-work to your profile. Attach your verified DevScore badge to ATS applications to stand out to engineering hiring teams across 4,000+ verified live tech openings (23,000+ cumulative audited) on RoleNest.

Explore 4,000+ Direct ATS Openings on RoleNest ↗Solve Challenge to Activate Ledger