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Practice the interview, not just the puzzle

Solve real coding problems in 8 languages against a live judge, then run AI mock interviews — coding and behavioral — built around the exact role you're chasing.

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Everything you need to walk in ready

Tailoring lands the interview — this gets you ready for it.

Real coding practice

Curated problems from easy to hard, solved in a Monaco editor against a real judge with per-case results — in 8 languages.

AI mock interviews

Run live coding interviews with an AI interviewer that asks follow-ups, then scores your performance with a clear rubric.

Behavioral prep

Practice STAR-method behavioral answers grounded in the role and company you're targeting, with actionable feedback.

Practice in 8 languages

Write and run your solution in the language you'll actually use in the interview — every one runs against a real judge.

PythonJavaScriptTypeScriptGoJavaC++C#PHP
The coding workspace

A real LeetCode-grade editor, right in Talorr

Switch languages, drag the divider, run against tests — this is the exact workspace you get inside Practice. Go ahead, try it.

Merge Intervals
29:14Talorr credit8
Mediumarraysortingintervals
Asked at Google Amazon Meta

Given an array of intervals where intervals[i] = [start, end], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input.

Examples

Example 1

Input:
intervals = [[1,3],[2,6],[8,10],[15,18]]
Output:
[[1,6],[8,10],[15,18]]

Since [1,3] and [2,6] overlap, merge them into [1,6].

Example 2

Input:
intervals = [[1,4],[4,5]]
Output:
[[1,5]]

[1,4] and [4,5] are considered overlapping.

Constraints

1 <= intervals.length <= 10^4
intervals[i].length == 2
0 <= start <= end <= 10^4

Hints

0/3
AI
1def merge(intervals):
2 intervals.sort(key=lambda x: x[0])
3 out = []
4 for start, end in intervals:
5 if out and start <= out[-1][1]:
6 out[-1][1] = max(out[-1][1], end)
7 else:
8 out.append([start, end])
9 return out
5/5 cases passed (all tests)
Case 1 Passed
Expected:
[[1,6],[8,10],[15,18]]
Got:
[[1,6],[8,10],[15,18]]
Case 2 Passed
Expected:
[[1,5]]
Got:
[[1,5]]

Monaco editor

8 languages with a real judge.

Run against tests

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Graded AI hints

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Interview tracks

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Pick a track tuned to a real role and seniority at a top company — each bundles the coding problems and behavioral questions that loop actually asks.

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Interview Prep
6 tracks
AI coding interview

Defend your solution to an AI interviewer

After you solve a problem, a senior engineer probes your approach, complexity and edge cases — then hands back a hire-signal scorecard.

  • Follow-up questions on your real code
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AI Mock Interview
Q 3/6
What's the time complexity of your sort-then-merge approach — and could you do better?
Sorting dominates at O(n log n); the single merge pass is linear, so overall O(n log n)…
88/100
Scorecard

Solid — articulate the space trade-off next time.

Correctness
92
Complexity
86
Communication
84
Edge cases
80
Behavioral mock · STAR

Rehearse behavioral rounds with an AI hiring manager

A senior interviewer grounded in your resume runs a STAR-method behavioral round, one question at a time, then scores you on structure, impact and role fit.

  • Questions personalized to your background
  • STAR-structured, with a detailed scorecard
  • Clear next steps to fix before the real thing
Behavioral · STAR
Q 2/5
Tell me about a time you led a backend project through major ambiguity.
I owned our payments migration when the spec kept shifting…
86/100
Scorecard

Strong hire signal — tighten your results metrics.

STAR structure
88
Impact
84
Communication
82
Role fit
90
Progress tracker

Watch yourself get interview-ready

Every run and submit feeds a tracker that shows what you've mastered and what to drill next — by difficulty, topic and streak.

  • Solved count, accuracy & day streaks
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Progress tracker

18/26

69% solved

86%

Submit accuracy

7

Day streak

12

Longest streak

By difficulty

Easy
10/12
Medium
7/11
Hard
1/3

Activity

142 submissions
26 problems · easy to hard 8 languages AI coding + behavioral mocks
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Interview prep questions

It's a practice suite that pairs real coding problems — solved against a live judge — with AI mock interviews (both coding and behavioral) tailored to the role you're applying for.

You can solve and run problems in 8 languages: Python, JavaScript, TypeScript, Go, Java, C++, C#, and PHP — each against a real code-execution judge.

You can start practicing for free. The free plan includes a daily allowance of coding runs and mock-interview sessions; Talorr+ removes the limits.

Yes. Behavioral mode runs role-grounded mock interviews using the STAR framework and gives you a scorecard so you can sharpen your answers before the real thing.

Talorr combines the coding practice with AI mock interviews and behavioral prep, and grounds them in the specific role you're chasing — so you prepare for the actual interview, not just the puzzles.

Want frameworks and sample answers too? Read the interview guides →

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