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請問銀行家演算法?
Sep 8th 2013, 22:30

行程
需要R的總數 Max
R1 R2 R3
P1 8 0 2
P2 5 2 3
P3 1 2 4
P4 7 7 7
P5 3 3 5

持有R的數目 Allocation
R1 R2 R3
P1 1 0 0
P2 3 0 0
P3 0 1 2
P4 2 5 2
P5 0 2 3

系統尚未配置的R總數 Available
R1 R2 R3
3 1 2
請問
1. 表格現況:安全狀態，存在安全序列： P5→P3→ P2→ P1→ P4
疑問--P1 need (7.0.2) 但作到P2只有(6.4.7) ，安全序列如何成立?
2. P4要求（2, 1, 2)後，安全狀態?
以上 請幫忙解答，tks!

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