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FA/์ฝ”ํ…Œ์ฝ”ํ…Œ

20221214 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ [๋ฌธ์ž์—ด ๋‚ด ๋งˆ์Œ๋Œ€๋กœ ์ •๋ ฌํ•˜๊ธฐ]

๐Ÿ‘จ‍๐Ÿซ ๋ฌธ์ž์—ด ๋‚ด ๋งˆ์Œ๋Œ€๋กœ ์ •๋ ฌํ•˜๊ธฐ

๋ฌธ์ œ ์„ค๋ช…

๋ฌธ์ž์—ด๋กœ ๊ตฌ์„ฑ๋œ ๋ฆฌ์ŠคํŠธ strings์™€, ์ •์ˆ˜ n์ด ์ฃผ์–ด์กŒ์„ ๋•Œ, ๊ฐ ๋ฌธ์ž์—ด์˜ ์ธ๋ฑ์Šค n๋ฒˆ์งธ ๊ธ€์ž๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์˜ค๋ฆ„์ฐจ์ˆœ ์ •๋ ฌํ•˜๋ ค ํ•ฉ๋‹ˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด strings๊ฐ€ ["sun", "bed", "car"]์ด๊ณ  n์ด 1์ด๋ฉด ๊ฐ ๋‹จ์–ด์˜ ์ธ๋ฑ์Šค 1์˜ ๋ฌธ์ž "u", "e", "a"๋กœ strings๋ฅผ ์ •๋ ฌํ•ฉ๋‹ˆ๋‹ค.

์ œํ•œ ์กฐ๊ฑด
  • strings๋Š” ๊ธธ์ด 1 ์ด์ƒ, 50์ดํ•˜์ธ ๋ฐฐ์—ด์ž…๋‹ˆ๋‹ค.
  • strings์˜ ์›์†Œ๋Š” ์†Œ๋ฌธ์ž ์•ŒํŒŒ๋ฒณ์œผ๋กœ ์ด๋ฃจ์–ด์ ธ ์žˆ์Šต๋‹ˆ๋‹ค.
  • strings์˜ ์›์†Œ๋Š” ๊ธธ์ด 1 ์ด์ƒ, 100์ดํ•˜์ธ ๋ฌธ์ž์—ด์ž…๋‹ˆ๋‹ค.
  • ๋ชจ๋“  strings์˜ ์›์†Œ์˜ ๊ธธ์ด๋Š” n๋ณด๋‹ค ํฝ๋‹ˆ๋‹ค.
  • ์ธ๋ฑ์Šค 1์˜ ๋ฌธ์ž๊ฐ€ ๊ฐ™์€ ๋ฌธ์ž์—ด์ด ์—ฌ๋Ÿฟ ์ผ ๊ฒฝ์šฐ, ์‚ฌ์ „์ˆœ์œผ๋กœ ์•ž์„  ๋ฌธ์ž์—ด์ด ์•ž์ชฝ์— ์œ„์น˜ํ•ฉ๋‹ˆ๋‹ค.
์ž…์ถœ๋ ฅ ์˜ˆstringsnreturn
["sun", "bed", "car"] 1 ["car", "bed", "sun"]
["abce", "abcd", "cdx"] 2 ["abcd", "abce", "cdx"]
์ž…์ถœ๋ ฅ ์˜ˆ ์„ค๋ช…

์ž…์ถœ๋ ฅ ์˜ˆ 1
"sun", "bed", "car"์˜ 1๋ฒˆ์งธ ์ธ๋ฑ์Šค ๊ฐ’์€ ๊ฐ๊ฐ "u", "e", "a" ์ž…๋‹ˆ๋‹ค. ์ด๋ฅผ ๊ธฐ์ค€์œผ๋กœ strings๋ฅผ ์ •๋ ฌํ•˜๋ฉด ["car", "bed", "sun"] ์ž…๋‹ˆ๋‹ค.

์ž…์ถœ๋ ฅ ์˜ˆ 2
"abce"์™€ "abcd", "cdx"์˜ 2๋ฒˆ์งธ ์ธ๋ฑ์Šค ๊ฐ’์€ "c", "c", "x"์ž…๋‹ˆ๋‹ค. ๋”ฐ๋ผ์„œ ์ •๋ ฌ ํ›„์—๋Š” "cdx"๊ฐ€ ๊ฐ€์žฅ ๋’ค์— ์œ„์น˜ํ•ฉ๋‹ˆ๋‹ค. "abce"์™€ "abcd"๋Š” ์‚ฌ์ „์ˆœ์œผ๋กœ ์ •๋ ฌํ•˜๋ฉด "abcd"๊ฐ€ ์šฐ์„ ํ•˜๋ฏ€๋กœ, ๋‹ต์€ ["abcd", "abce", "cdx"] ์ž…๋‹ˆ๋‹ค.

 

 

๐Ÿ™†

function solution(strings, n) {
  return strings.sort((a, b) => {
    if (a[n] < b[n]) return -1; // a[n]์ด b[n] ๋ณด๋‹ค ์ž‘์„ ๊ฒฝ์šฐ ์•ž์œผ๋กœ ๋ณด๋‚ธ๋‹ค.
    if (a[n] > b[n]) return 1; // a[n]์ด b[n] ๋ณด๋‹ค ํด ๊ฒฝ์šฐ ๋’ค๋กœ ๋ณด๋‚ธ๋‹ค.

    if (a[n] === b[n]) {
      // ์ฃผ์–ด์ง„ ๋ฌธ์ž๊ฐ€ ๊ฐ™์„ ๊ฒฝ์šฐ
      // ๋ฌธ์ž์—ด์„ ๋น„๊ตํ•ด ์˜ค๋ฆ„์ฐจ์ˆœ ์ •๋ ฌ
      if (a < b) return -1;
      if (a > b) return 1;
    }

    return strings;
  });
}