Skip to content

[Algorithm] CountDivΒ #139

Description

@hwangJi-dev

πŸ’¬Β λ¬Έμ œ

https://app.codility.com/programmers/lessons/5-prefix_sums/count_div/


πŸ’¬Β Idea

  • Aκ°€ K둜 λ‚˜λˆ„μ–΄λ–¨μ–΄μ§€μ§€ μ•ŠλŠ”λ‹€λ©΄ Bμ—μ„œ Kλ₯Ό λ‚˜λˆˆ κ°’μ—μ„œ Aλ₯Ό K둜 λ‚˜λˆˆ 값을 λΉΌμ„œ λ¦¬ν„΄ν•˜κ³ , Aκ°€ K둜 λ‚˜λˆ„μ–΄λ–¨μ–΄μ§„λ‹€λ©΄ Bμ—μ„œ Kλ₯Ό λ‚˜λˆˆ κ°’μ—μ„œ Aλ₯Ό K둜 λ‚˜λˆˆ 값에 1을 λ”ν•΄μ„œ λ¦¬ν„΄ν•œλ‹€.

πŸ’¬Β ν’€μ΄

publicfunc solution(A :Int, B :Int, K :Int)->Int{if A % K !=0{return(B / K)-(A / K)}else{return(B / K)-(A / K)+1}}

μ†Œμš”μ‹œκ°„ : 15λΆ„

μ‹œκ°„ λ³΅μž‘λ„ : O(1)

ν‰κ°€ν‘œ : https://app.codility.com/demo/results/trainingMDRS56-ZFR/

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions