๐Ÿ’ก Level 1 | ๋‚˜๋จธ์ง€๊ฐ€ 1์ด ๋˜๋Š” ์ˆ˜ ์ฐพ๊ธฐ (JavaScript)

yerimยท2022๋…„ 7์›” 1์ผ
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programmers

๋ชฉ๋ก ๋ณด๊ธฐ
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๐Ÿ“Œ ๋ฌธ์ œ

  • ์ž์—ฐ์ˆ˜ n์ด ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ์ฃผ์–ด์ง‘๋‹ˆ๋‹ค. n์„ x๋กœ ๋‚˜๋ˆˆ ๋‚˜๋จธ์ง€๊ฐ€ 1์ด ๋˜๋„๋ก ํ•˜๋Š” ๊ฐ€์žฅ ์ž‘์€ ์ž์—ฐ์ˆ˜ x๋ฅผ return ํ•˜๋„๋ก solution ํ•จ์ˆ˜๋ฅผ ์™„์„ฑํ•ด์ฃผ์„ธ์š”. ๋‹ต์ด ํ•ญ์ƒ ์กด์žฌํ•จ์€ ์ฆ๋ช…๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

https://programmers.co.kr/learn/courses/30/lessons/87389

๐Ÿ“ ๋ฌธ์ œ ํ’€์ด

function solution(n) {
  for (let i = 0; i < n; i++) {
    if (n % i === 1) {
      return i;
    }
  }
}
  • for๋ฌธ์„ ํ†ตํ•ด ๋‚˜๋จธ์ง€๊ฐ€ 1์ด๋˜๋ฉด ๋ฐ”๋กœ return ๋˜๋„๋ก ํ’€์ด

๐ŸŒฟ ๋‹ค๋ฅธ ์‚ฌ๋žŒ์˜ ํ’€์ด

  • while๋ฌธ ์‚ฌ์šฉ
function solution(n, x = 1) {    
    while (x++) {
        if (n % x === 1) {
            return x;
        }
    }    
}
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