์Šคํ„ฐ๋”” 19

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/Python] Lv 2. ์ฃผ์‹๊ฐ€๊ฒฉ

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/42584 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ from collections import deque def solution(prices): answer = [] prices = deque(prices) while prices: time = 0 price = prices.popleft() for p in prices: time += 1 if p < price: break answer.append(time) retur..

Python/Programmers 2023.05.01

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 1. ๊ฐ•์›๋„์— ์œ„์น˜ํ•œ ์ƒ์‚ฐ๊ณต์žฅ ๋ชฉ๋ก ์ถœ๋ ฅํ•˜๊ธฐ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/131112 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT FACTORY_ID, FACTORY_NAME, ADDRESS FROM FOOD_FACTORY WHERE ADDRESS LIKE "๊ฐ•์›๋„%" ORDER BY FACTORY_ID

SQL/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 1. ์กฐ๊ฑด์— ๋งž๋Š” ๋„์„œ ๋ฆฌ์ŠคํŠธ ์ถœ๋ ฅํ•˜๊ธฐ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/144853 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT BOOK_ID, DATE_FORMAT(PUBLISHED_DATE, "%Y-%m-%d") AS PUBLISHED_DATE FROM BOOK WHERE (YEAR(PUBLISHED_DATE)=2021) AND (CATEGORY="์ธ๋ฌธ") ORDER BY PUBLISHED_DATE ASC

SQL/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 1. ์กฐ๊ฑด์— ๋ถ€ํ•ฉํ•˜๋Š” ์ค‘๊ณ ๊ฑฐ๋ž˜ ๋Œ“๊ธ€ ์กฐํšŒํ•˜๊ธฐ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/164673 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT B.TITLE, B.BOARD_ID, R.REPLY_ID, R.WRITER_ID, R.CONTENTS, DATE_FORMAT(R.CREATED_DATE,"%Y-%m-%d") AS CREATED_DATE FROM USED_GOODS_BOARD AS B JOIN USED_GOODS_REPLY AS R ON B.BOARD_ID = R.BOARD_ID WHERE..

SQL/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 4. ์„œ์šธ์— ์œ„์น˜ํ•œ ์‹๋‹น ๋ชฉ๋ก ์ถœ๋ ฅํ•˜๊ธฐ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/131118 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT I.REST_ID, REST_NAME, FOOD_TYPE, FAVORITES, ADDRESS, ROUND(AVG(REVIEW_SCORE),2) AS SCORE FROM REST_INFO I JOIN REST_REVIEW R ON I.REST_ID = R.REST_ID GROUP BY I.REST_ID HAVING ADDRESS LIKE "์„œ์šธ%" ORDE..

SQL/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 1. ์ธ๊ธฐ์žˆ๋Š” ์•„์ด์Šคํฌ๋ฆผ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/133024 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT FLAVOR FROM FIRST_HALF ORDER BY TOTAL_ORDER DESC, SHIPMENT_ID ASC

SQL/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/Python] Lv 0. ๋กœ๊ทธ์ธ ์„ฑ๊ณต?

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/120883 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ def solution(id_pw, db): answer = '' db_dict = {user[0]:user[1] for user in db} if id_pw[0] in db_dict: if id_pw[1]==db_dict[id_pw[0]]: answer = "login" else: answer = "wrong pw" else: answer = "fail" retur..

Python/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/Python] Lv 1. ๋Œ€์ถฉ ๋งŒ๋“  ์žํŒ

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/160586 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ def solution(keymap, targets): answer = [] keymaps = {} for key in keymap: for k in key: if k not in keymaps: keymaps[k] = key.index(k)+1 else: if (key.index(k)+1) < keymaps[k]: keymaps[k] = key.index(k)+1 ..

Python/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/Python] Lv 2. ๊ฒŒ์ž„ ๋งต ์ตœ๋‹จ๊ฑฐ๋ฆฌ

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/1844 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ # BFS ์•Œ๊ณ ๋ฆฌ์ฆ˜ : ๋„ˆ๋น„ ์šฐ์„  ํƒ์ƒ‰ # ๊ฐ€๊นŒ์šด ๋…ธ๋“œ๋ถ€ํ„ฐ ํƒ์ƒ‰ from collections import deque def solution(maps): answer = 0 # ์ขŒ, ์šฐ, ํ•˜, ์ƒ dx = [-1, 1, 0, 0] dy = [0, 0, -1, 1] r = len(maps) # ํ–‰ c = len(maps[0]) # ์—ด # ์ขŒํ‘œ ๋ฐฉ๋ฌธ ์ตœ๋‹จ๊ฑฐ๋ฆฌ graph = ..

Python/Programmers 2023.04.18

[ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค/SQL] Lv 1. ํ‰๊ท  ์ผ์ผ ๋Œ€์—ฌ ์š”๊ธˆ ๊ตฌํ•˜๊ธฐ (MySQL)

โญ ๋ฌธ์ œ ๋งํฌ https://school.programmers.co.kr/learn/courses/30/lessons/151136 ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค ์ฝ”๋“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 โญ ํ’€์ด ์ฝ”๋“œ SELECT ROUND(AVG(DAILY_FEE)) AS AVERAGE_FEE FROM CAR_RENTAL_COMPANY_CAR WHERE CAR_TYPE = "SUV" # ROUND(์ˆ˜์น˜๊ฐ’, ์†Œ์ˆ˜์  ์•„๋ž˜ ์ž๋ฆฌ์ˆ˜) : ๋ฐ˜์˜ฌ๋ฆผ ํ•จ์ˆ˜

SQL/Programmers 2023.04.17