[์ฝ”๋“œํŠธ๋ฆฌ/JS] ์ข€ ๋” ์–ด๋ ค์šด ์ˆ˜ํ•™ ์ ์ˆ˜
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๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/์ฝ”๋“œํŠธ๋ฆฌ
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..
[์ฝ”๋“œํŠธ๋ฆฌ/JS] ์†Œ์ˆ˜์  ๋งž์ถฐ ์ถœ๋ ฅํ•˜๊ธฐ
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๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/์ฝ”๋“œํŠธ๋ฆฌ
๋ณดํ˜ธ๋˜์–ด ์žˆ๋Š” ๊ธ€์ž…๋‹ˆ๋‹ค.
[์ฝ”๋“œํŠธ๋ฆฌ/JS] ์ •์ˆ˜ ์ž…๋ ฅ๋ฐ›์•„ ๋ฐฐ์ˆ˜ ์ถœ๋ ฅ ์„ค๋ช…
ยท
๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/์ฝ”๋“œํŠธ๋ฆฌ
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..
[์ฝ”๋“œํŠธ๋ฆฌ/JS] โœ… A/B ์ถœ๋ ฅ
ยท
๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/์ฝ”๋“œํŠธ๋ฆฌ
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..
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] ๊ณต๋ฐฑ์œผ๋กœ ๊ตฌ๋ถ„ํ•˜๊ธฐ1
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๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
๐Ÿ“š ๋ฌธ์ œ ์ด๋ฆ„1. ๋ฌธ์ œ2. ๋ฌธ์ œ ํ’€์ด๊ณต๋ฐฑ์„ ๊ตฌ๋ถ„์ž๋กœ ์‚ฌ์šฉํ•˜์—ฌ ๋ฌธ์ž์—ด์„ ์ž๋ฅด๊ธฐ ์œ„ํ•ด split ๋ฉ”์„œ๋“œ๋ฅผ ์‚ฌ์šฉํ•˜์˜€๋‹ค.Split๊ตฌ๋ถ„์ž๋ฅผ ๊ธฐ์ค€์œผ๋กœ ๋ฌธ์ž์—ด์„ ์ž˜๋ผ ๋ฐฐ์—ด๋กœ ์ž…๋ ฅํ•  ๋•Œ ์‚ฌ์šฉํ•˜๋Š” ๋ฉ”์„œ๋“œsplit(String regex);๊ตฌ๋ถ„์ž๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๋ฐฐ์—ด ํ˜•์‹์œผ๋กœ ๋ฌธ์ž์—ด์„ ์ž˜๋ผ์ค๋‹ˆ๋‹คsplit(String regex, int limit);์œ„์™€ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ๊ตฌ๋ถ„์ž๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๋ฐฐ์—ด ํ˜•์‹์œผ๋กœ ๋ฌธ์ž์—ด์„ ์ž๋ฅด์ง€๋งŒ limit ์ˆ˜๋งŒํผ ์ž˜๋ผ์ค๋‹ˆ๋‹ค3. ์ •๋ฆฌ๋‚ด ํ’€์ดclass Solution { public String[] solution(String my_string) { String[] answer = my_string.split(" "); return answer; }}  ๋‹ค๋ฅธ ์‚ฌ๋žŒ ํ’€์ดimp..
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/JAVA] ๊ธธ์ด์— ๋”ฐ๋ฅธ ์—ฐ์‚ฐ
ยท
๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
๋ฌธ์ œ ) ๊ธธ์ด์— ๋”ฐ๋ฅธ ์—ฐ์‚ฐ๋‚ด ๋‹ตclass Solution { public int solution(int[] num_list) { int answer = 0; if(num_list.length > 10){ for(int i = 0; i ๋ฆฌํŒฉํ† ๋งclass Solution { public int solution(int[] num_list) { int answer = (num_list.length answer๊ฐ’์„ 0๊ณผ 1๋กœ ๊ฐ๊ฐ ์ง€์ •ํ•ด์ฃผ์—ˆ๋‹ค๋ฉด, ์‚ผํ•ญ์—ฐ์‚ฐ์ž๋ฅผ ์‚ฌ์šฉํ•ด์„œ ํ•œ์ค„๋กœ ์ง€์ •for๋ฌธ์€ ๋‘๋ฒˆ ๋ฐ˜๋ณตํ•˜๋˜๊ฒƒ์„ ํ•œ๋ฒˆ ์‚ฌ์šฉํ•˜๋Š”๊ฑธ๋กœ ๋ฌถ๊ณ , if - else๋ฌธ ์‚ฌ์šฉ
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค] rny_string
ยท
๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
๐Ÿ“š rny_string1. ๋ฌธ์ œ2. ๋ฌธ์ œ ํ’€์ด์•„์ง ์ž๋ฐ”๋ฅผ ์ž˜ ๋ชจ๋ฅด๊ณ  ํ—ท๊ฐˆ๋ ค์„œ, ์•„๋ฌด๋ฆฌ ์‰ฌ์šด ๋ฌธ์ œ์—ฌ๋„ ํ•˜๋‚˜ํ•˜๋‚˜ ๋ถ„์„ํ•˜๋ฉด์„œ ํ’€์–ด๋ณด๊ธฐ๋กœํ–ˆ๋‹ค.class Solution { public String solution(String rny_string) { // marsterpiece์— ์žˆ๋Š” m์„ rn์œผ๋กœ ๋ณ€๊ฒฝํ•ด์ฃผ์–ด์•ผํ•จ // 1. ์ž…๋ ฅ๋ฐ›์€ ๋ฐ์ดํ„ฐ(rny_string)์— m์ด ์žˆ๋Š”์ง€ ํ™•์ธ // -> ๋ฌธ์ž์—ด์„ ํ•˜๋‚˜์”ฉ, ๋ฐฐ์—ด๋กœ ๋‹ด์€ ํ›„ ๋ฐ˜๋ณต๋ฌธ์„ ๋Œ๋ ค์„œ ํ•˜๋‚˜ํ•˜๋‚˜ ๋น„๊ตํ•˜๊ธฐ // 2. ์žˆ๋‹ค๋ฉด rn์œผ๋กœ ๋ณ€๊ฒฝ, ์—†๋‹ค๋ฉด ๊ทธ๋ƒฅ ์ถœ๋ ฅ char[] answer = new char[rny_string.length()]; for(int i = 0;..
[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/JAVA] ๋ฌธ์ž์—ด ๊ณฑํ•˜๊ธฐ
ยท
๐Ÿ•น๏ธ ์ฝ”๋”ฉํ…Œ์ŠคํŠธ/ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
๋ฌธ์ œ : ๋ฌธ์ž์—ด ๊ณฑํ•˜๊ธฐhttps://school.programmers.co.kr/learn/courses/30/lessons/181940 ๋‚ด ํ’€์ดclass Solution { public String solution(String my_string, int k) { String answer = ""; for (int i = 0; i ๋‹ค๋ฅธ ์‚ฌ๋žŒ ํ’€์ดclass Solution { public String solution(String my_string, int k) { return my_string.repeat(k); }}repeat() : String ๋ฉ”์„œ๋“œString ๋ฌธ์ž์—ด์„ ํŒŒ๋ผ๋ฏธํ„ฐ์˜ ์ฃผ์–ด์ง„ ํšŸ์ˆ˜๋งŒํผ ๋ฐ˜๋ณตjava11์—์„œ ์ƒˆ๋กœ ์ถ”๊ฐ€๋œ String ๋ฉ”์„œ๋“œํŒŒ..