OpenGenus/cosmos

Unique Number

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#649 opened on Oct 5, 2017

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 (6 comments) (1 reaction) (0 assignees)C++ (3,724 forks)batch import
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Description

Find unique number in an array where every element occours thrice except one.Find that unique Number

Contributor guide

Research direction
Implement a function using bit manipulation: count the occurrence of each bit across all numbers modulo 3. Alternatively, use a mathematical approach. Research bitwise operations and the modulo 3 counting technique.
Tech stack
cpp
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70