回答編集履歴
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test
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@@ -3,3 +3,81 @@
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こちらのアルゴリズムを少しいじればほしい解が得られます。
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---
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javaではなく、Pythonですが。
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```python
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a = [[1,0,0,1,1,0],
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[1,0,0,0,1,1],
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[1,1,0,0,1,0],
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[0,1,0,1,1,1]]
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from pprint import pprint
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pprint(a)
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def find(b, c, i, j, d=0):
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if (i>=0 and i<len(b[0])
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and j>=0 and j<len(b)
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and (c[j][i] is False) and b[j][i]==1):
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d += 1
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c[j][i] = True
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d = find(b, c, i-1, j, d=d)
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d = find(b, c, i+1, j, d=d)
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d = find(b, c, i, j-1, d=d)
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d = find(b, c, i, j+1, d=d)
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return d
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def gen_bool(b):
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c = [[False for _ in range(len(b[0]))] for _ in range(len(b))]
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return c
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ans = 0
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c = gen_bool(a)
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for j in range(len(a)):
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for i in range(len(a[0])):
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if a[j][i]==1 and (c[j][i] is False):
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d = find(a, c, i, j)
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if d>ans:
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ans = d
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print(ans)
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```
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