ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค

โœ… ์žฌ๊ท€ ํ’€์ด answer=0def dfs(numbers,target,cur_idx,cur_total): global answer # ํƒˆ์ถœ ์กฐ๊ฑด(๋ชจ๋“  ์ˆ˜ ์ˆœํšŒ) if cur_idx==len(numbers): if cur_total==target: answer+=1 return else: dfs(numbers,target,cur_idx+1,cur_total+numbers[cur_idx]) dfs(numbers,target,cur_idx+1,cur_total-numbers[cur_idx])def solution(numbers, target): global answer dfs(numbers,target,0,..
https://school.programmers.co.kr/learn/courses/30/lessons/154540 ํ”„๋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  โœ… DFS ํ’€์ดimport syssys.setrecursionlimit(10**6)dx = [1, -1, 0, 0]dy = [0, 0, -1, 1]def dfs(x, y, graph): count = graph[x][y] # ํ˜„์žฌ ์œ„์น˜ ์‹๋Ÿ‰๊ฐ’ graph[x][y] = 0 # ๋ฐฉ๋ฌธ ์ฒ˜๋ฆฌ for d in range(4): nx = x + dx[d] ny =..
https://school.programmers.co.kr/learn/courses/30/lessons/42747 ํ”„๋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 โœ… ์ •๋‹ตํ’€์ด (Python)def solution(citations): citations.sort(reverse=True) h=0 for i in range(len(citations)): if citations[i]>=i+1: h=i+1 return hh๋ฒˆ ์ด์ƒ ์ธ์šฉ๋œ ๋…ผ๋ฌธ์ด hํŽธ์ด์ƒ์ด๋ผ๋Š” ์กฐ๊ฑด์„ ๋งŒ์กฑํ•˜๋Š” h๊ฐ’ ์ค‘, ์ œ์ผ ํฐ h๊ฐ’์„ ์ฐพ์•„์•ผํ•œ..
https://school.programmers.co.kr/learn/courses/30/lessons/159994 ํ”„๋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 โœ… ์ •๋‹ต ํ’€์ด Queue (Python)# ๊ฐ€์žฅ ๋งจ์•ž ์š”์†Œ๊ฐ€ ๋น ์ ธ๋‚˜๊ฐ€์•ผ ๋‹ค์Œ ์š”์†Œ๊ฐ€ ๋น ์ ธ๋‚˜๊ฐˆ ์ˆ˜ ์žˆ์œผ๋ฏ€๋กœ -> queue ์‚ฌ์šฉfrom collections import dequedef solution(cards1, cards2, goal): first_cards=deque(cards1) sec_cards=deque(cards2) for word in goal: if fi..
https://school.programmers.co.kr/learn/courses/30/lessons/42628 ํ”„๋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 โœ… 1์ฐจ ํ’€์ด import heapqdef solution(operations): heap = [] for operation in operations: [inst, value] = operation.split(' ') value = int(value) if inst == 'I': # heap ์‚ฝ์ž… heapq.hea..
https://school.programmers.co.kr/learn/courses/30/lessons/42626?language=python3 ํ”„๋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  โŽ 1์ฐจ ํ’€์ดimport heapqmin_heap = []def solution(scoville, K): heapq.heapify(scoville) count = 0 while scoville: # popํ•œ ๊ฐ’์ด k์ด์ƒ์ด๋˜๋ฉด, while ์ข…๋ฃŒ min_value = heapq.heappop(scoville) if mi..
https://school.programmers.co.kr/learn/courses/30/lessons/42577 ํ”„๋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  โœ… ์ •๋‹ตํ’€์ด (๋ฐฐ์—ด)def solution(phone_book): phone_book.sort() answer=True for i in range(len(phone_book)-1): if phone_book[i]==phone_book[i+1][:len(phone_book[i])]: answer=False return answer ์ด์ „์—, JS๋กœ ..
[Lv1] ํฐ์ผ“๋ชฌfunction solution(nums) { const map=new Map(); //ํฐ์ผ“๋ชฌ ์ข…๋ฅ˜ ๊ตฌํ•˜๊ธฐ for(const num of nums){ map.set(num,map.get(num)+1||1) } const type=map.size return Math.min(type,Math.floor(nums.length/2));}์ตœ๋Œ€ํ•œ ๋‹ค์–‘ํ•œ ์ข…๋ฅ˜์˜ ํฐ์ผ“๋ชฌ์„ ๊ฐ€์ ธ๊ฐ€๊ธธ ์›ํ•˜๊ณ , nums/2๋งŒํผ์˜ ํฐ์ผ“๋ชฌ์„ ๊ฐ€์ ธ๊ฐˆ ์ˆ˜ ์žˆ๊ธฐ ๋•Œ๋ฌธ์— ํฐ์ผ“๋ชฌ ์ข…๋ฅ˜์˜ ์ˆ˜์™€ nums/2์ค‘ ์ตœ์†Œ๊ฐ’์„ ๋ฆฌํ„ดํ•ด์ฃผ๋ฉด ๋œ๋‹ค.   ๐Ÿ›  Refactorfunction solution(nums) { //ํฐ์ผ“๋ชฌ ์ข…๋ฅ˜ ๊ตฌํ•˜๊ธฐ const set=new Set(nums); c..
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