๊ฐœ๋ฐœ/๐Ÿ’ฌ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ์˜คํ”ˆ์ฑ„ํŒ…๋ฐฉ - ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ

๋ฐ(Ming) ๐Ÿˆโ€โฌ› 2022. 2. 23. 23:41
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๋ฐ˜์‘ํ˜•

โœ… ๋ฌธ์ œ

์นด์นด์˜คํ†ก ์˜คํ”ˆ์ฑ„ํŒ…๋ฐฉ์—์„œ๋Š” ์นœ๊ตฌ๊ฐ€ ์•„๋‹Œ ์‚ฌ๋žŒ๋“ค๊ณผ ๋Œ€ํ™”๋ฅผ ํ•  ์ˆ˜ ์žˆ๋Š”๋ฐ, ๋ณธ๋ž˜ ๋‹‰๋„ค์ž„์ด ์•„๋‹Œ ๊ฐ€์ƒ์˜ ๋‹‰๋„ค์ž„์„ ์‚ฌ์šฉํ•˜์—ฌ ์ฑ„ํŒ…๋ฐฉ์— ๋“ค์–ด๊ฐˆ ์ˆ˜ ์žˆ๋‹ค.

์‹ ์ž…์‚ฌ์›์ธ ๊น€ํฌ๋ฃจ๋Š” ์นด์นด์˜คํ†ก ์˜คํ”ˆ ์ฑ„ํŒ…๋ฐฉ์„ ๊ฐœ์„คํ•œ ์‚ฌ๋žŒ์„ ์œ„ํ•ด, ๋‹ค์–‘ํ•œ ์‚ฌ๋žŒ๋“ค์ด ๋“ค์–ด์˜ค๊ณ , ๋‚˜๊ฐ€๋Š” ๊ฒƒ์„ ์ง€์ผœ๋ณผ ์ˆ˜ ์žˆ๋Š” ๊ด€๋ฆฌ์ž์ฐฝ์„ ๋งŒ๋“ค๊ธฐ๋กœ ํ–ˆ๋‹ค. ์ฑ„ํŒ…๋ฐฉ์— ๋ˆ„๊ตฐ๊ฐ€ ๋“ค์–ด์˜ค๋ฉด ๋‹ค์Œ ๋ฉ”์‹œ์ง€๊ฐ€ ์ถœ๋ ฅ๋œ๋‹ค.

"[๋‹‰๋„ค์ž„]๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."

์ฑ„ํŒ…๋ฐฉ์—์„œ ๋ˆ„๊ตฐ๊ฐ€ ๋‚˜๊ฐ€๋ฉด ๋‹ค์Œ ๋ฉ”์‹œ์ง€๊ฐ€ ์ถœ๋ ฅ๋œ๋‹ค.

"[๋‹‰๋„ค์ž„]๋‹˜์ด ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค."

์ฑ„ํŒ…๋ฐฉ์—์„œ ๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•˜๋Š” ๋ฐฉ๋ฒ•์€ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋‘ ๊ฐ€์ง€์ด๋‹ค.

  • ์ฑ„ํŒ…๋ฐฉ์„ ๋‚˜๊ฐ„ ํ›„, ์ƒˆ๋กœ์šด ๋‹‰๋„ค์ž„์œผ๋กœ ๋‹ค์‹œ ๋“ค์–ด๊ฐ„๋‹ค.
  • ์ฑ„ํŒ…๋ฐฉ์—์„œ ๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•œ๋‹ค.

๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•  ๋•Œ๋Š” ๊ธฐ์กด์— ์ฑ„ํŒ…๋ฐฉ์— ์ถœ๋ ฅ๋˜์–ด ์žˆ๋˜ ๋ฉ”์‹œ์ง€์˜ ๋‹‰๋„ค์ž„๋„ ์ „๋ถ€ ๋ณ€๊ฒฝ๋œ๋‹ค.

์˜ˆ๋ฅผ ๋“ค์–ด, ์ฑ„ํŒ…๋ฐฉ์— "Muzi"์™€ "Prodo"๋ผ๋Š” ๋‹‰๋„ค์ž„์„ ์‚ฌ์šฉํ•˜๋Š” ์‚ฌ๋žŒ์ด ์ˆœ์„œ๋Œ€๋กœ ๋“ค์–ด์˜ค๋ฉด ์ฑ„ํŒ…๋ฐฉ์—๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋ฉ”์‹œ์ง€๊ฐ€ ์ถœ๋ ฅ๋œ๋‹ค.

"Muzi๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."

์ฑ„ํŒ…๋ฐฉ์— ์žˆ๋˜ ์‚ฌ๋žŒ์ด ๋‚˜๊ฐ€๋ฉด ์ฑ„ํŒ…๋ฐฉ์—๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋ฉ”์‹œ์ง€๊ฐ€ ๋‚จ๋Š”๋‹ค.

"Muzi๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Muzi๋‹˜์ด ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค."

Muzi๊ฐ€ ๋‚˜๊ฐ„ํ›„ ๋‹ค์‹œ ๋“ค์–ด์˜ฌ ๋•Œ, Prodo ๋ผ๋Š” ๋‹‰๋„ค์ž„์œผ๋กœ ๋“ค์–ด์˜ฌ ๊ฒฝ์šฐ ๊ธฐ์กด์— ์ฑ„ํŒ…๋ฐฉ์— ๋‚จ์•„์žˆ๋˜ Muzi๋„ Prodo๋กœ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋ณ€๊ฒฝ๋œ๋‹ค.

"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."

์ฑ„ํŒ…๋ฐฉ์€ ์ค‘๋ณต ๋‹‰๋„ค์ž„์„ ํ—ˆ์šฉํ•˜๊ธฐ ๋•Œ๋ฌธ์—, ํ˜„์žฌ ์ฑ„ํŒ…๋ฐฉ์—๋Š” Prodo๋ผ๋Š” ๋‹‰๋„ค์ž„์„ ์‚ฌ์šฉํ•˜๋Š” ์‚ฌ๋žŒ์ด ๋‘ ๋ช…์ด ์žˆ๋‹ค. ์ด์ œ, ์ฑ„ํŒ…๋ฐฉ์— ๋‘ ๋ฒˆ์งธ๋กœ ๋“ค์–ด์™”๋˜ Prodo๊ฐ€ Ryan์œผ๋กœ ๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•˜๋ฉด ์ฑ„ํŒ…๋ฐฉ ๋ฉ”์‹œ์ง€๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋ณ€๊ฒฝ๋œ๋‹ค.

"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Ryan๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค."
"Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."

์ฑ„ํŒ…๋ฐฉ์— ๋“ค์–ด์˜ค๊ณ  ๋‚˜๊ฐ€๊ฑฐ๋‚˜, ๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•œ ๊ธฐ๋ก์ด ๋‹ด๊ธด ๋ฌธ์ž์—ด ๋ฐฐ์—ด record๊ฐ€ ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์งˆ ๋•Œ, ๋ชจ๋“  ๊ธฐ๋ก์ด ์ฒ˜๋ฆฌ๋œ ํ›„, ์ตœ์ข…์ ์œผ๋กœ ๋ฐฉ์„ ๊ฐœ์„คํ•œ ์‚ฌ๋žŒ์ด ๋ณด๊ฒŒ ๋˜๋Š” ๋ฉ”์‹œ์ง€๋ฅผ ๋ฌธ์ž์—ด ๋ฐฐ์—ด ํ˜•ํƒœ๋กœ return ํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•˜๋ผ.

์ œํ•œ์‚ฌํ•ญ

  • record๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๋ฌธ์ž์—ด์ด ๋‹ด๊ธด ๋ฐฐ์—ด์ด๋ฉฐ, ๊ธธ์ด๋Š” 1 ์ด์ƒ 100,000 ์ดํ•˜์ด๋‹ค.
  • ๋‹ค์Œ์€ record์— ๋‹ด๊ธด ๋ฌธ์ž์—ด์— ๋Œ€ํ•œ ์„ค๋ช…์ด๋‹ค.
    • ๋ชจ๋“  ์œ ์ €๋Š” [์œ ์ € ์•„์ด๋””]๋กœ ๊ตฌ๋ถ„ํ•œ๋‹ค.
    • [์œ ์ € ์•„์ด๋””] ์‚ฌ์šฉ์ž๊ฐ€ [๋‹‰๋„ค์ž„]์œผ๋กœ ์ฑ„ํŒ…๋ฐฉ์— ์ž…์žฅ - "Enter [์œ ์ € ์•„์ด๋””] [๋‹‰๋„ค์ž„]" (ex. "Enter uid1234 Muzi")
    • [์œ ์ € ์•„์ด๋””] ์‚ฌ์šฉ์ž๊ฐ€ ์ฑ„ํŒ…๋ฐฉ์—์„œ ํ‡ด์žฅ - "Leave [์œ ์ € ์•„์ด๋””]" (ex. "Leave uid1234")
    • [์œ ์ € ์•„์ด๋””] ์‚ฌ์šฉ์ž๊ฐ€ ๋‹‰๋„ค์ž„์„ [๋‹‰๋„ค์ž„]์œผ๋กœ ๋ณ€๊ฒฝ - "Change [์œ ์ € ์•„์ด๋””] [๋‹‰๋„ค์ž„]" (ex. "Change uid1234 Muzi")
    • ์ฒซ ๋‹จ์–ด๋Š” Enter, Leave, Change ์ค‘ ํ•˜๋‚˜์ด๋‹ค.
    • ๊ฐ ๋‹จ์–ด๋Š” ๊ณต๋ฐฑ์œผ๋กœ ๊ตฌ๋ถ„๋˜์–ด ์žˆ์œผ๋ฉฐ, ์•ŒํŒŒ๋ฒณ ๋Œ€๋ฌธ์ž, ์†Œ๋ฌธ์ž, ์ˆซ์ž๋กœ๋งŒ ์ด๋ฃจ์–ด์ ธ์žˆ๋‹ค.
    • ์œ ์ € ์•„์ด๋””์™€ ๋‹‰๋„ค์ž„์€ ์•ŒํŒŒ๋ฒณ ๋Œ€๋ฌธ์ž, ์†Œ๋ฌธ์ž๋ฅผ ๊ตฌ๋ณ„ํ•œ๋‹ค.
    • ์œ ์ € ์•„์ด๋””์™€ ๋‹‰๋„ค์ž„์˜ ๊ธธ์ด๋Š” 1 ์ด์ƒ 10 ์ดํ•˜์ด๋‹ค.
    • ์ฑ„ํŒ…๋ฐฉ์—์„œ ๋‚˜๊ฐ„ ์œ ์ €๊ฐ€ ๋‹‰๋„ค์ž„์„ ๋ณ€๊ฒฝํ•˜๋Š” ๋“ฑ ์ž˜๋ชป ๋œ ์ž…๋ ฅ์€ ์ฃผ์–ด์ง€์ง€ ์•Š๋Š”๋‹ค.

 

โœ… ์ž…์ถœ๋ ฅ ์˜ˆ

์ž…์ถœ๋ ฅ ์˜ˆ

recordresult

["Enter uid1234 Muzi", "Enter uid4567 Prodo","Leave uid1234","Enter uid1234 Prodo","Change uid4567 Ryan"] ["Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค.", "Ryan๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค.", "Prodo๋‹˜์ด ๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค.", "Prodo๋‹˜์ด ๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค."]

์ž…์ถœ๋ ฅ ์˜ˆ ์„ค๋ช…

์ž…์ถœ๋ ฅ ์˜ˆ #1
๋ฌธ์ œ์˜ ์„ค๋ช…๊ณผ ๊ฐ™๋‹ค.

 

 

 

โœ… ์˜์‹์˜ ํ๋ฆ„

enter์™€ leave๋ฅผ ๋”ฐ๋กœ ์ •์˜ํ•ด๋‘๊ณ  , change๊ฐ€ ๋“ค์–ด๊ฐ”์„ ๋•Œ๋Š” ์ œ์™ธํ•˜๊ณ  ๋งˆ์ง€๋ง‰์— ๋‚˜์˜ค๋Š” ๊ฑธ๋กœ ๋ฎ์–ด์“ฐ๋ฉด ๋˜์ง€ ์•Š์„๊นŒ? ๋ผ๊ณ  ์ƒ๊ฐํ–ˆ๋‹ค. ์ด๋ฆ„๋„ id๋ž‘ ํ•จ๊ป˜ ๋”ฐ๋กœ ์–ด๋”˜๊ฐ€์— ์ €์žฅํ•ด๋‘๊ณ  ์“ฐ๋ฉด ๋˜์ง€ ์•Š์„๊นŒ??? ๋ผ๊ณ  ์ƒ๊ฐํ–ˆ๋‹ค. 

 

 

 

โœ… Solution

function solution(record) {
  const userName = {};

  const massage = {
    "Leave": "๋‚˜๊ฐ”์Šต๋‹ˆ๋‹ค.",
    "Enter": "๋“ค์–ด์™”์Šต๋‹ˆ๋‹ค.",
  }

  return record
    .map(rec => rec.split(" "))
    .filter(rec => {
      const [state, id, name] = rec;

      if (name) {
        userName[id] = name;
      }

      return state !== "Change";
    })
    .map(rec => `${userName[rec[1]]}๋‹˜์ด ${massage[rec[0]]}`);
}

 

 

 

 

 

 

 

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