[DFS & BFS] 04월 28일 #14
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ZERO-black
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Apr 30, 2022
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| solve(x-1,y,paint) | ||
| solve(x,y-1,paint) | ||
| solve(x+1,y,paint) | ||
| solve(x,y+1,paint) |
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p3. 이 부분은 dx, dy 배열을 만들면 반복문으로 표현할 수 있어요! 라이브코딩 소스코드와 과제 샘플코드 한번씩 보시는 것도 좋을거 같아요.😊
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| for i in range(n): | ||
| for j in range(n): | ||
| #같은 구역의 국가끼리 ans로 묶어줌 | ||
| if solve(i,j): | ||
| temp.append(ans) | ||
| ans=[] |
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p2. 이 문제에서는 항상 모든 나라를 검사할 필요는 없어요. 직전에 인구이동이 없던 나라를 제외하고 검색해도 충분합니다. 관련해서는 샘플코드에 설명 남겨두었으니 한번 참고해보시면 좋을거 같아요!
| for j in range(n): | ||
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| prev=painting[i][j] #구역의 색 저장 | ||
| if solve(i,j,painting): |
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현재 painting이 전역변수니까, 사실 함수를 호출하기 전에 미리 False인지 True인지 알 수 있어요. 리턴값을 받지 않고 필요할 때만 함수를 호출하도록 코드를 짤 수도 있을거 같아요😊
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내용 & 질문
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