heapq 1

HEAP #ํž™ ์ž๋ฃŒ๊ตฌ์กฐ #heapq #Dijkstra #๋‹ค์ต์ŠคํŠธ๋ผ ์•Œ๊ณ ๋ฆฌ์ฆ˜

ํž™์ด๋ž€?: ๋ฌด์—‡์ธ๊ฐ€๋ฅผ ์ฐจ๊ณก์ฐจ๊ณก ์Œ“์•„์˜ฌ๋ฆฐ ๋”๋ฏธ: ํ•ญ์ƒ ์ด์ง„ํŠธ๋ฆฌ ํ˜•ํƒœ: ๋ถ€๋ชจ์˜ ๊ฐ’์€ ํ•ญ์ƒ ์ž์‹์˜ ๊ฐ’๋ณด๋‹ค ํฌ๊ฑฐ๋‚˜(์ตœ๋Œ€ ํž™) ์ž‘์•„์•ผ(์ตœ์†Œ ํž™) ํ•จ ์ตœ๋Œ€ ํž™ : ๋ถ€๋ชจ ๋…ธ๋“œ์˜ ํ‚ค ๊ฐ’์ด ์ž์‹ ๋…ธ๋“œ์˜ ํ‚ค ๊ฐ’๋ณด๋‹ค ํ•ญ์ƒ ํฐ ํž™์ตœ์†Œ ํž™ : ๋ถ€๋ชจ ๋…ธ๋“œ์˜ ํ‚ค ๊ฐ’์ด ์ž์‹ ๋…ธ๋“œ์˜ ํ‚ค ๊ฐ’๋ณด๋‹ค ํ•ญ์ƒ ์ž‘์€ ํž™ # ํŒŒ์ด์ฌ์—์„œ heap ์‚ฌ์šฉํ•˜๊ธฐ # ์ตœ์†Œ ํž™ ๊ตฌํ˜„๊ณผ heapq ๋ชจ๋“ˆ ์‚ฌ์šฉimport heapq #heapq heap = [] #list๋กœ ์ดˆ๊ธฐํ™”heapq.heappush(heap, item) #item์„ heap์— ์ถ”๊ฐ€ >> heap์— pushํ•˜๋ฉด ์ž๋™์œผ๋กœ ์ตœ์†Œํž™์˜ ํ˜•ํƒœ๋กœ ์ •๋ ฌheapq.heappop(heap) #heap์—์„œ ๊ฐ€์žฅ ์ž‘์€ ์›์†Œ๋ฅผ popheapq.heapif..