Deloitte interview practice

Deloitte Coding Interview Questions and Technical Practice Start with verified evidence.

Practice from 18 Deloitte-tagged public coding problems, organized only by the stage, topic, difficulty, and recency metadata FastPrep can verify. The broader public catalog also includes 1 system-design exercise, 1 low-level-design exercise.

Catalog: 20 public practice assets (18 coding)
Start here: Use the stage named in your invitation
Evidence: OA · Onsite metadata, shown in context

Deloitte practice workspace

Stage-led · public FastPrep catalog

OA practice path

Online Assessment

Build a timed implementation rhythm from prompt to edge cases. Problems are ranked by repeated public catalog sightings.

Solve one end to end

17 Deloitte-tagged Online Assessment problems available.

Company	Problem	Difficulty	Public evidence	Action
DEDeloitte	Seventh Nearest Palindrome	Unrated	1 public reportLast reported May 2026	Practice
DEDeloitte	Minimum Deletions for a Non-PalindromeStringTwo Pointers	Easy	1 public reportLast reported Jul 2025	Practice
DEDeloitte	Minimum-Cost Solar Rooftop AllocationArraySorting	Medium	1 public reportLast reported Jul 2025	Practice
DEDeloitte	Pair Elements with Even SumsArrayMath	Easy	1 public reportLast reported Jul 2025	Practice
DEDeloitte	Count Divisible PermutationsDynamic ProgrammingBit Manipulation	Hard	1 public reportLast reported Jan 2025	Practice
DEDeloitte	Largest Element in an ArrayArray	Easy	1 public reportLast reported Nov 2024	Practice
DEDeloitte	Install Carbon FiltersStringGreedy	Medium	1 public reportLast reported Oct 2023	Practice
DEDeloitte	Longest Substring with Even OccurrencesStringBit Manipulation	Medium	1 public reportLast reported Oct 2023	Practice
DEDeloitte	Maximum Sum RectangleArrayMatrix	Hard	1 public reportLast reported Apr 2022	Practice
DEDeloitte	Annual Bank Balance with Monthly Card FeesArraySimulation	Easy	1 public reportLast reported Jan 2022	Practice
DEDeloitte	Count Battleships by SizeMatrixDepth-First Search	Easy	1 public reportLast reported Jan 2022	Practice
DEDeloitte	Equal-Length Character BlocksStringGreedy	Easy	1 public reportLast reported Jan 2022	Practice
DEDeloitte	Number of Steps to Reduce a Binary Number to OneStringBit Manipulation	Medium	1 public reportLast reported Jan 2022	Practice
DEDeloitte	All Pairs with Target SumArrayHash Table	Easy	1 public reportLast reported Jul 2021	Practice
DEDeloitte	Parameterized Divisibility LabelsArrayMath	Easy	1 public reportLast reported Feb 2019	Practice
DEDeloitte	Sorted Character FrequenciesStringHash Table	Easy	1 public reportLast reported Feb 2019	Practice
DEDeloitte	Top N Longest SentencesArrayString	Easy	1 public reportLast reported Feb 2019	Practice

Onsite practice path

Onsite

Practice complete solutions and defend the choices behind them. Problems are ranked by repeated public catalog sightings.

Solve one end to end

Company	Problem	Difficulty	Public evidence	Action
DEDeloitte	Check AnagramsStringSorting	Easy	1 public reportLast reported Jun 2026	Practice

01 · Preparation plan

Move from character counts to compressed parity states.

Deloitte's public coding set supports a string-and-counting study sequence. Begin with exact character counts, then introduce positional divisibility with used-value state and parity masks. This page owns software-engineering practice, not consulting case interviews, audit questions, accounting preparation, or all Deloitte recruitment programs. This is a suggested practice sequence, not the employer's interview process. Your invitation and recruiter guidance remain the source of truth.

01
Compare character multisets
Anagram checking is a useful warm-up for defining normalization and counting. Equal length alone does not prove matching character frequencies.
- Clarify case and whitespace rules.
- Test repeated characters.
- Compare counting with sorting tradeoffs.
Practice: Check Anagrams
02
Count arrangements satisfying positional divisibility
Arrange the values from one through n so every value-position pair satisfies at least one of the two divisibility directions. Track already-used values with backtracking or a mask; there is no concatenated-number remainder transition in this exercise.
- Check both value-divides-position and position-divides-value conditions.
- Define the next position from the values already placed.
- Compare the counted arrangements with explicit enumeration on a tiny input.
Practice: Count Divisible Permutations
03
Represent even-occurrence conditions with parity
The substring exercise is useful for replacing full counts with the information that actually matters. Equal prefix parity states can identify qualifying ranges.
- Define one bit per relevant character.
- Store the earliest occurrence of each state.
- Include the empty prefix state.
Practice: Longest Substring with Even Occurrences

02 · Broader technical practice

Practice beyond standalone coding questions.

These public Deloitte-tagged exercises cover additional technical formats. They are included only when a verified catalog record and a crawlable practice page both exist.

System designLast seen Oct 2026

Design a URL Shortening Service

Design a deliberately small URL-shortening core, then evolve it into a highly available service whose fixed logical shards can move safely as physical storage capacity grows.

Open practice

Low-level designLast seen Sep 2026

Design an Extensible Multi-Channel Alerting Platform

Model an alerting core that can add alert categories and delivery channels without rewriting its dispatcher.

Open practice

03 · Evidence boundary

What “Deloitte interview questions” means here.

It means practicing transferable implementation, testing, and technical reasoning with public catalog assets FastPrep tags to Deloitte. It does not mean FastPrep has access to the company's assessments or any private interview bank.

Repeated public sightings and last-reported dates can help you prioritize practice, but they cannot predict the questions, format, or platform in a specific interview.

Only Deloitte-tagged FastPrep catalog problems appear above.
Stage labels and report dates remain visible as context.
No official, private, leaked, or proprietary questions are claimed.

04 · Plain answers

Deloitte interview practice questions, answered plainly.

This page owns technical-practice intent for Deloitte. Hiring activity, timelines, and market signals remain on the separate hiring-insights page.

01Does this Deloitte page cover consulting case interviews?

No. It is a coding-practice collection. Consulting cases, audit, accounting, and business-role interviews have different requirements that the available programming assets do not establish. Use role-specific official guidance for those areas and the catalog for technical problem solving.

02Is FastPrep affiliated with Deloitte?

No. FastPrep is an independent interview-preparation product and is not affiliated with Deloitte. The page uses FastPrep's public practice catalog and does not claim official, private, leaked, or proprietary employer questions.

03How are Deloitte problems assigned to interview stages?

Stage labels come from FastPrep's public problem metadata. A problem can carry more than one reported stage, and hiring processes can change by role, level, location, and date. Treat the labels as preparation context, not a guarantee.

04Which Deloitte interview stage should I practice first?

Start with the stage named in your invitation or recruiter message. If no stage is known, use the largest available set to build general problem-solving fluency, then rehearse explanation and testing separately.

05Does this page predict the Deloitte interview process?

No. Public catalog counts, stage tags, and last-reported dates can help prioritize practice, but they cannot predict a specific interview's questions, sequence, timing, or platform.

Your next stage, made concrete

Pick a problem. Solve it end to end.

Start with the stage named in your invitation, then use public evidence as context—not as a promise of what you will be asked.

Open the practice set