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๐Ÿ“ฆ Changgo 316

[BOJ][Python] ๋ฐฑ์ค€ 1010๋ฒˆ: ๋‹ค๋ฆฌ ๋†“๊ธฐ

https://www.acmicpc.net/problem/1010 ๋ฌธ์ œ์žฌ์›์ด๋Š” ํ•œ ๋„์‹œ์˜ ์‹œ์žฅ์ด ๋˜์—ˆ๋‹ค. ์ด ๋„์‹œ์—๋Š” ๋„์‹œ๋ฅผ ๋™์ชฝ๊ณผ ์„œ์ชฝ์œผ๋กœ ๋‚˜๋ˆ„๋Š” ํฐ ์ผ์ง์„  ๋ชจ์–‘์˜ ๊ฐ•์ด ํ๋ฅด๊ณ  ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ์žฌ์›์ด๋Š” ๋‹ค๋ฆฌ๊ฐ€ ์—†์–ด์„œ ์‹œ๋ฏผ๋“ค์ด ๊ฐ•์„ ๊ฑด๋„ˆ๋Š”๋ฐ ํฐ ๋ถˆํŽธ์„ ๊ฒช๊ณ  ์žˆ์Œ์„ ์•Œ๊ณ  ๋‹ค๋ฆฌ๋ฅผ ์ง“๊ธฐ๋กœ ๊ฒฐ์‹ฌํ•˜์˜€๋‹ค. ๊ฐ• ์ฃผ๋ณ€์—์„œ ๋‹ค๋ฆฌ๋ฅผ ์ง“๊ธฐ์— ์ ํ•ฉํ•œ ๊ณณ์„ ์‚ฌ์ดํŠธ๋ผ๊ณ  ํ•œ๋‹ค. ์žฌ์›์ด๋Š” ๊ฐ• ์ฃผ๋ณ€์„ ๋ฉด๋ฐ€ํžˆ ์กฐ์‚ฌํ•ด ๋ณธ ๊ฒฐ๊ณผ ๊ฐ•์˜ ์„œ์ชฝ์—๋Š” N๊ฐœ์˜ ์‚ฌ์ดํŠธ๊ฐ€ ์žˆ๊ณ  ๋™์ชฝ์—๋Š” M๊ฐœ์˜ ์‚ฌ์ดํŠธ๊ฐ€ ์žˆ๋‹ค๋Š” ๊ฒƒ์„ ์•Œ์•˜๋‹ค. (N ≤ M)์žฌ์›์ด๋Š” ์„œ์ชฝ์˜ ์‚ฌ์ดํŠธ์™€ ๋™์ชฝ์˜ ์‚ฌ์ดํŠธ๋ฅผ ๋‹ค๋ฆฌ๋กœ ์—ฐ๊ฒฐํ•˜๋ ค๊ณ  ํ•œ๋‹ค. (์ด๋•Œ ํ•œ ์‚ฌ์ดํŠธ์—๋Š” ์ตœ๋Œ€ ํ•œ ๊ฐœ์˜ ๋‹ค๋ฆฌ๋งŒ ์—ฐ๊ฒฐ๋  ์ˆ˜ ์žˆ๋‹ค.) ์žฌ์›์ด๋Š” ๋‹ค๋ฆฌ๋ฅผ ์ตœ๋Œ€ํ•œ ๋งŽ์ด ์ง€์œผ๋ ค๊ณ  ํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์„œ์ชฝ์˜ ์‚ฌ์ดํŠธ ๊ฐœ์ˆ˜๋งŒํผ (N๊ฐœ) ๋‹ค๋ฆฌ๋ฅผ ์ง€์œผ..

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ์กฐ๊ฑด ๋ฌธ์ž์—ด

https://school.programmers.co.kr/learn/courses/30/lessons/181934 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public int solution(String ineq, String eq, int n, int m) { int answer = 0; boolean goe = ineq.equals(">") && eq.equals("="); boolean loe = ineq.equals("") && eq.equals("!"); ..

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ํ™€์ง์— ๋”ฐ๋ผ ๋‹ค๋ฅธ ๊ฐ’ ๋ฐ˜ํ™˜ํ•˜๊ธฐ

https://school.programmers.co.kr/learn/courses/30/lessons/181935 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public int solution(int n) { int answer = 0; for(int i=n; i>0; i-=2) { answer += n%2==1 ? i : i*i; } return answer; }}

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ๊ณต๋ฐฐ์ˆ˜

https://school.programmers.co.kr/learn/courses/30/lessons/181936 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.krclass Solution { public int solution(int number, int n, int m) { int answer = 0; if(number%n==0 && number%m==0) { answer = 1; } else { answer = 0; } ..

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : n์˜ ๋ฐฐ์ˆ˜

https://school.programmers.co.kr/learn/courses/30/lessons/181937 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public int solution(int num, int n) { int answer = 0; if(num%n == 0) { answer = 1; } else { answer = 0; } return answer; }}

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ๋‘ ์ˆ˜์˜ ์—ฐ์‚ฐ๊ฐ’ ๋น„๊ตํ•˜๊ธฐ

https://school.programmers.co.kr/learn/courses/30/lessons/181938 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public int solution(int a, int b) { int answer = 0; int first = Integer.parseInt(Integer.toString(a) + Integer.toString(b)); int second = 2*a*b; if(first>second..

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ๋” ํฌ๊ฒŒ ํ•ฉ์น˜๊ธฐ

https://school.programmers.co.kr/learn/courses/30/lessons/181939 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public int solution(int a, int b) { int answer = 0; String A = Integer.toString(a); String B = Integer.toString(b); int first = Integer.parseInt(A+B); in..

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค : ๋ฌธ์ž์—ด ๊ณฑํ•˜๊ธฐ

https://school.programmers.co.kr/learn/courses/30/lessons/181940  ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr  class Solution { public String solution(String my_string, int k) { String answer = ""; for(int i=0; i

[Java] ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค: ๋ฌธ์ž ๋ฆฌ์ŠคํŠธ๋ฅผ ๋ฌธ์ž์—ด๋กœ ๋ณ€ํ™˜ํ•˜๊ธฐ

https://school.programmers.co.kr/learn/courses/30/lessons/181941 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์ฝ”๋“œ ์ค‘์‹ฌ์˜ ๊ฐœ๋ฐœ์ž ์ฑ„์šฉ. ์Šคํƒ ๊ธฐ๋ฐ˜์˜ ํฌ์ง€์…˜ ๋งค์นญ. ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค์˜ ๊ฐœ๋ฐœ์ž ๋งž์ถคํ˜• ํ”„๋กœํ•„์„ ๋“ฑ๋กํ•˜๊ณ , ๋‚˜์™€ ๊ธฐ์ˆ  ๊ถํ•ฉ์ด ์ž˜ ๋งž๋Š” ๊ธฐ์—…๋“ค์„ ๋งค์นญ ๋ฐ›์œผ์„ธ์š”.programmers.co.kr class Solution { public String solution(String[] arr) { String answer = ""; for(String i : arr) { answer += i; } return answer; }}

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