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Geine Dev
๊ฒ€์ƒ‰ํ•˜๊ธฐ

๋ธ”๋กœ๊ทธ ํ™ˆ

Geine Dev

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๋‚ด๊ฐ€ ๊ณต๋ถ€ํ•˜๋Š” ์ง€์‹์„ ๋ณต์Šตํ•˜๊ณ  ๊ธฐ๋กํ•˜๋Š” ๊ณต๊ฐ„์ž…๋‹ˆ๋‹ค ๐Ÿ’ฌ

๊ตฌ๋…์ž
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๋ฐฉ๋ช…๋ก ๋ฐฉ๋ฌธํ•˜๊ธฐ
๊ณต์ง€ ๋ฉ”๋ชจ ๋ชจ๋‘๋ณด๊ธฐ

์ฃผ์š” ๊ธ€ ๋ชฉ๋ก

  • [์ฝ”๋“œํŠธ๋ฆฌ/JS] ์ข€ ๋” ์–ด๋ ค์šด ์ˆ˜ํ•™ ์ ์ˆ˜ https://www.codetree.ai/ko/trails/complete/curated-cards/challenge-math-scores-are-more-difficult/description์œ ๋ฃŒ๋กœ ์ „ํ™˜๋˜์–ด, ๋ฌธ์ œ๊ฐ€ ๋ณด์ด์ง€ ์•Š์„ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค! Code Tree | Learning to Code with ConfidenceA super-comprehensive, meticulously arranged Coding Learning Curriculum engineered by Algorithm Experts composed of former International Olympiad in Informatics (IOI) medalists.www.codetree.ai ๋‚ด๊ฐ€ ํ‘ผ ๋ฌธ์ œconst fs = requ.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2025. 3. 11.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JS] ์†Œ์ˆ˜์  ๋งž์ถฐ ์ถœ๋ ฅํ•˜๊ธฐ ๋ณดํ˜ธ๋˜์–ด ์žˆ๋Š” ๊ธ€์ž…๋‹ˆ๋‹ค. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2025. 2. 26.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JS] ์ •์ˆ˜ ์ž…๋ ฅ๋ฐ›์•„ ๋ฐฐ์ˆ˜ ์ถœ๋ ฅ ์„ค๋ช… https://www.codetree.ai/ko/trails/complete/curated-cards/challenge-print-multiple-of-input/description์œ ๋ฃŒ๋กœ ์ „ํ™˜๋˜์–ด ๋ฌธ์ œ๊ฐ€ ๋ณด์ด์ง€์•Š์„ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค. ์ •์ˆ˜ ์ž…๋ ฅ๋ฐ›์•„ ๋ฐฐ์ˆ˜ ์ถœ๋ ฅ ์„ค๋ช… - ์ฝ”๋“œํŠธ๋ฆฌ์ •์ˆ˜ ์ž…๋ ฅ๋ฐ›์•„ ๋ฐฐ์ˆ˜ ์ถœ๋ ฅ ๋ฌธ์ œ ์š”๊ตฌ์‚ฌํ•ญ์„ ๊ผผ๊ผผํžˆ ํ™•์ธํ•˜๊ณ , ํšจ๊ณผ์ ์ธ ํ’€์ด ์ „๋žต์„ ์ˆ˜๋ฆฝํ•ด๋ณด์„ธ์š”.www.codetree.ai๋ฌธ์ œ์ž์—ฐ์ˆ˜ N์„ ์ž…๋ ฅ๋ฐ›์•„ N๋ณด๋‹ค ํฌ๊ฑฐ๋‚˜ ๊ฐ™์€ N์˜ ๋ฐฐ์ˆ˜ ์ค‘ ์ž‘์€ ์ˆ˜ 5๊ฐœ๋ฅผ ์ฐจ๋ก€๋กœ ์ถœ๋ ฅํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•ด๋ณด์„ธ์š”.๋‚ด๊ฐ€ ํ‘ผ ๋ฌธ์ œํ’€์ดconst fs = require("fs");let a = Number(fs.readFileSync(0).toString());let result = "";for(let i = 1; i ํ—ท.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2025. 2. 24.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JS] โœ… A/B ์ถœ๋ ฅ https://www.codetree.ai/ko/trails/complete/curated-cards/challenge-a-divide-b/description์œ ๋ฃŒ๋กœ ์ „ํ™˜๋˜์–ด, ๋ฌธ์ œ๊ฐ€ ๋ณด์ด์ง€ ์•Š์„ ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค. A/B ์ถœ๋ ฅ ์„ค๋ช… - ์ฝ”๋“œํŠธ๋ฆฌA/B ์ถœ๋ ฅ ๋ฌธ์ œ ์š”๊ตฌ์‚ฌํ•ญ์„ ๊ผผ๊ผผํžˆ ํ™•์ธํ•˜๊ณ , ํšจ๊ณผ์ ์ธ ํ’€์ด ์ „๋žต์„ ์ˆ˜๋ฆฝํ•ด๋ณด์„ธ์š”.www.codetree.ai๋ฌธ์ œ๋‘ ์ •์ˆ˜ A์™€ B๊ฐ€ ์ฃผ์–ด์ง„๋‹ค.์‹ค์ˆ˜ A/B์˜ ๊ฐ’์„ ์†Œ์ˆ˜์  21๋ฒˆ์งธ ์ž๋ฆฌ์—์„œ ๋‚ด๋ฆผํ•˜์—ฌ ์ถœ๋ ฅํ•˜๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•ด๋ผ ์˜ค๋‹ต๋…ธํŠธ- toFixed()๋ผ๋Š” ์†Œ์ˆ˜์  ๋งž์ถฐ ์ถœ๋ ฅํ•˜๋Š” ๋ฉ”์„œ๋“œ๋ฅผ ์•Œ๊ณ ์žˆ์–ด์„œ, ์ด๊ฑธ ์‚ฌ์šฉํ–ˆ๋Š”๋ฐ, toFixed()๋Š” ๋ฐ˜์˜ฌ๋ฆผ ์ฒ˜๋ฆฌํ•˜๋Š” ๋ฉ”์„œ๋“œ์˜€๋‹ค. ๋ฌธ์ œ hint์— ๋‚˜์™€์žˆ๋“ฏ์ด, format ํ•จ์ˆ˜ ๋งŒ์œผ๋กœ๋Š” ์†Œ์ˆ˜์  20๋ฒˆ์งธ๊นŒ์ง€์˜ ๊ฐ’์„ ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ๊ตฌํ•  ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2025. 1. 20.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์ฝ”๋กœ๋‚˜ ๋ฉ”๋‰ด์–ผ https://www.codetree.ai/missions/4/problems/covid-manual?&utm_source=clipboard&utm_medium=text์ถœ๋ ฅ ํ˜•์‹์œ„๊ธ‰์ƒํ™ฉ์ด๋ผ๋ฉด E๋ฅผ, ๊ทธ๋ ‡์ง€ ์•Š๋‹ค๋ฉด N์„ ์ถœ๋ ฅํ•ฉ๋‹ˆ๋‹ค.๋‚ด์ฝ”๋“œ๋ฌธ์ œ๊ฐ€ ... ์–ด๋ ต๋‹ค ์•„์ง ๋งŽ์ด ๋ถ€์กฑํ•œ ๊ฒƒ ๊ฐ™๋‹ค ใ…  ใ… ์ด๊ฒŒ ์ž…๋ ฅ๋ฐ›๋Š” ๊ฐ’์ด Y ์ˆซ์ž ์ด๋Ÿฐ์‹์œผ๋กœ 3๊ฐœ๋ฅผ ๋ฐ›๋Š”๋‹ค, ๊ทธ๋Ÿผ ์ƒ๊ฐํ–ˆ์„ ๋•Œ y๊ฐ™์€ ๋ฌธ์ž๋ฅผ ๋ฐ›์„ ์ž…๋ ฅ๊ฐ’ ๋ณ€์ˆ˜ 3๊ฐœ๋ž‘ ์ˆซ์ž๋ฐ›์„ ๋ณ€์ˆ˜ 3๊ฐœํ•ด์„œ6๊ฐœ์˜ ๋ณ€์ˆ˜๋ฅผ ๋ฐ›์•„์•ผํ•˜๋Š”๊ฑธ๊นŒ ๊ณ ๋ฏผ์„ ํ–ˆ๋‹ค . . . . ๊ทผ๋ฐ ํ•œ์ค„์— ๋ฒˆ๊ฐˆ์•„๊ฐ€๋ฉฐ ์ž…๋ ฅ์„ ๋ฐ›์•„์•ผํ•˜๋Š”๋ฐ,  ์šฐ์„  6๊ฐœ์˜ ๋ณ€์ˆ˜๋ฅผ ๋งŒ๋“ ๋‹ค๊ณ  ์ƒ๊ฐํ•ด๋ณด์žString c1 = sc.next();int c2 = sc.nextInt();String b1 = sc.next();int b2 = sc.nextIn.. ๊ณต๊ฐ์ˆ˜ 1 ๋Œ“๊ธ€์ˆ˜ 1 2024. 9. 6.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์œค๋…„์ธ๊ฐ€ https://www.codetree.ai/missions/4/problems/is-leap-year?&utm_source=clipboard&utm_medium=textํšŒ๊ณ 4๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€๋Š” ํ•ด๋Š” ์œค๋…„, ๊ทธ ๋ฐ–์˜ ํ•ด๋Š” ํ‰๋…„์ž…๋‹ˆ๋‹ค.๋‹จ, ์˜ˆ์™ธ์ ์œผ๋กœ 100์œผ๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€๋˜ 400์œผ๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€์ง€ ์•Š๋Š” ํ•ด๋Š” ํ‰๋…„์œผ๋กœ ํ•ฉ๋‹ˆ๋‹ค.์ด ์กฐ๊ฑด์„ ์ดํ•ด๋ฅผ.. ๋ชปํ•ด์„œ ๋ญ” ๋ง์ธ๊ฐ€ ํ•œ์ฐธ์„ ๊ณ ๋ฏผํ–ˆ๋Š”๋ฐ, ์‚ฌ์‹ค ์ง€๊ธˆ๋„ ์ •ํ™•ํžˆ ์ž˜ ๋ชจ๋ฅด๊ฒ ๋‹ค ใ… ใ… ์ด๋ฌธ์ œ๋ž‘ ๋‹ค์Œ ๋ฌธ์ œ๋Š” ๊ณ ๋ฏผํ•˜๋‹ค๊ฐ€, ๋ฌธ์ œ ์ž์ฒด๋ฅผ ์ดํ•ด๋ชปํ•ด์„œ ํ•ด์„ค์„ ๋ณด๊ณ  ์ง€๊ธˆ ๋‹ค์‹œ ํ’€์–ด๋ณธ๋‹ค๋Š” ๋งˆ์Œ์œผ๋กœ ์˜ค๋‹ต์ •๋ฆฌ๋ฅผ ํ•ด๋ณธ๋‹ค....์†”์งํžˆ ๋ฌธ์ œ๊ฐ€ ์ข€ ์ด์ƒํ•จ์šฐ์„  ์กฐ๊ฑด 1. 4๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€๋Š” => 4์˜ ๋ฐฐ์ˆ˜์กฐ๊ฑด 2๊ฐ€ ๋ฌธ์ œ์˜€๋Š”๋ฐ 100์œผ๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€๋ฉด์„œ 400์œผ๋กœ ๋‚˜๋ˆ„์–ด ๋–จ์–ด์ง€์ง€ ์•Š๋Š” ํ•ด=> 1.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 9. 5.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ๋‘ ์‚ฌ๋žŒ https://www.codetree.ai/missions/4/problems/two-person?&utm_source=clipboard&utm_medium=text ๋‚ด ์ฝ”๋“œ import java.util.Scanner;public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a_age = sc.nextInt(); String a_gender = sc.next(); int b_age = sc.nextInt(); String b_gender = sc.next(); if(((a_age >= 19) || (.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 9. 4.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์ข€ ๋” ์–ด๋ ค์šด ์ˆ˜ํ•™ ์ ์ˆ˜ https://www.codetree.ai/missions/4/problems/math-scores-are-more-difficult?&utm_source=clipboard&utm_medium=text๋‚ด ์ฝ”๋“œ์šฐ์„  ํ•™์ƒ A์™€ B๊ฐ€ ์žˆ๋‹ค.A์™€ B์˜ ์˜์–ด,์ˆ˜ํ•™์ ์ˆ˜๋ฅผ ๊ฐ๊ฐ ์ž…๋ ฅ๋ฐ›์•„์•ผํ•œ๋‹ค ( = Scanner)์กฐ๊ฑด 1. ์˜์–ด ์ ์ˆ˜์™€ ์ƒ๊ด€x ์ˆ˜ํ•™ ์ ์ˆ˜๊ฐ€ ๋†’์œผ๋ฉด, ๋†’์€ ํ•™์ƒ ์ด๋ฆ„ ์ถœ๋ ฅ์กฐ๊ฑด 2. ์ˆ˜ํ•™ ์ ์ˆ˜๊ฐ€ ๊ฐ™์œผ๋ฉด ์˜์–ด ์ ์ˆ˜๊ฐ€ ๋†’์€ ํ•™์ƒ์˜ ์ด๋ฆ„ ์ถœ๋ ฅ๋‹จ, ์ˆ˜ํ•™ ์ ์ˆ˜์™€ ์˜์–ด ์ ์ˆ˜๊ฐ€ ๋‘˜ ๋‹ค ๋™์ผํ•˜๊ฒŒ ์ฃผ์–ด์ง€๋Š” ๊ฒฝ์šฐ๋Š” ์—†์Œ. ๊ทธ๋Ÿผ ์ž…๋ ฅ ๋ฐ›์•„์•ผํ•  ์ ์ˆ˜๊ฐ€ a์˜ ์˜์–ด,์ˆ˜ํ•™ / b์˜ ์˜์–ด, ์ˆ˜ํ•™ 4๊ฐœ๋‹ค.import java.util.Scanner;public class Main { public static void main(St.. ๊ณต๊ฐ์ˆ˜ 2 ๋Œ“๊ธ€์ˆ˜ 2 2024. 9. 3.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์ตœ๋Œ€ 2๋ฒˆ์˜ ์—ฐ์‚ฐ https://www.codetree.ai/missions/4/problems/up-to-2-calculations?&utm_source=clipboard&utm_medium=text๋‚ด ์ฝ”๋“œimport java.util.Scanner;public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); if ( a % 2 == 0){ System.out.print(a/2); } if ( a % 2 != 0){ System.out.print((.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 8. 17.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์„ธ ์ •์ˆ˜์˜ ์ตœ์†Ÿ๊ฐ’ https://www.codetree.ai/missions/4/problems/minimum-of-three-numbers?&utm_source=clipboard&utm_medium=text์ด ๋ฌธ์ œ๋Š” ๋งž์ท„์ง€๋งŒ, ์กฐ๊ธˆ ๋” ๋ณด์™„์ด ํ•„์š”ํ•ด ๋ณด์—ฌ ๊ธฐ๋ก์šฉ์œผ๋กœ ํฌ์ŠคํŒ…ํ•œ๋‹ค.๋‚ด ์ฝ”๋“œimport java.util.Scanner;public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); int c = sc.nextInt(); System.out.pr.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 8. 7.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] 1์‹œ๊ฐ„ ๋’ค ์‹œ๊ฐ„ ์ถœ๋ ฅ https://www.codetree.ai/missions/4/problems/print-one-hour-later?&utm_source=clipboard&utm_medium=text๋ฌธ์ œ ํ’€๋‹ค๋ณด๋‹ˆ ๋ชจ๋ฅด๋Š” ๋‚ด์šฉ์ด ๋‚˜์˜จ๊น€์— ์ •๋ฆฌsc.useDelimiter(ํŠน์ •๋ฌธ์ž)๋‘ ์ˆ˜๊ฐ€ ๊ณต๋ฐฑ์ด ์•„๋‹Œ ํŠน์ • ๋ฌธ์ž๋ฅผ ์‚ฌ์ด์— ๋‘๊ณ  ์ž…๋ ฅ์œผ๋กœ ๋“ค์–ด๋Š” ๊ฒฝ์šฐ์—๋Š”, sc.useDelimiter(ํŠน์ • ๋ฌธ์ž) ์„ ์ด์šฉํ•ด ์ž๋™์œผ๋กœ ๊ทธ ๋ฌธ์ž ๋‹จ์œ„๋กœ ์ž˜๋ผ์„œ ๋‘ ๊ฐœ์˜ ์ˆ˜๋ฅผ ๋ฐ›์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์˜ˆ์ œ ์ฝ”๋“œimport java.util.Scanner;public class Main { public static void main (String args[]) { Scanner sc = new Scanner(System.in); .. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 8. 7.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ๊ธธ์ด ๋‹จ์œ„ ๋ณ€ํ™˜ํ•˜๊ธฐ https://www.codetree.ai/missions/4/problems/change-length-unit?&utm_source=clipboard&utm_medium=text๋‚ด ์ฝ”๋“œpublic class Main { public static void main(String[] args) { // 1ํ”ผํŠธ์™€ 9.2ํ”ผํŠธ ๋ณ€์ˆ˜ double a = 9.2; double b = 30.48; double ab = a * b; System.out.print(a + "ft" + " = "); System.out.printf("%.1fcm",ab); System.out.print("\n"); // 1๋งˆ์ผ๊ณผ 1.3๋งˆ.. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 8. 7.
  • [์ฝ”๋“œํŠธ๋ฆฌ/JAVA] ์†Œ์ˆ˜์  ๋งž์ถฐ ์ถœ๋ ฅํ•˜๊ธฐ/๋‹ฌ์˜ ๋ฌด๊ฒŒ ๊ตฌํ•˜๊ธฐ ์‹ค์ˆ˜๊ฐ’์„ ๊ฐ–๋Š” ๋ณ€์ˆ˜์˜ ๊ฒฝ์šฐ ์†Œ์ˆ˜์  ์ž๋ฆฌ๋ฅผ ๋งž์ถฐ ์ถœ๋ ฅํ•˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋Œ€๋‹ค์ˆ˜ ์ด ๊ฒฝ์šฐ์—” System.out.printf๋ฅผ ์ด์šฉํ•ด %.?f ํ˜•ํƒœ๋กœ ํฌ๋งท์„ ์ง€์ •ํ•ด์ฃผ๋ฉด ๋จ๋‹ค์Œ ์ฝ”๋“œ๋Š” ์†Œ์ˆ˜์  4์งธ์งœ๋ฆฌ๊นŒ์ง€ ๊ฐ’์„ ๋ฐ˜์˜ฌ๋ฆผํ•˜์—ฌ ์ถœ๋ ฅํ•˜๋Š” ์ฝ”๋“œJAVA ์ฝ”๋“œpublic class Main { public static void main (String args[]) { double a = 33.567268; System.out.printf("%.4f", a); }}์ถœ๋ ฅ๊ฒฐ๊ณผ33.5673๋ฌธ์ œhttps://www.codetree.ai/missions/4/problems/weight-on-the-moon?&utm_source=clipboard&utm_medium=text๋‚ด๊ฐ€ ์“ด ๋‹ตpublic class .. ๊ณต๊ฐ์ˆ˜ 0 ๋Œ“๊ธ€์ˆ˜ 0 2024. 8. 7.
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