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@ -114,27 +114,36 @@ Get an overview over our variables now: |
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Sl: Nullpointer |
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Sr: R(10) |
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we have case 2 described in Wikipedia (reverse colors of P and S) |
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cases: |
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- case 2: S is red => reverse color of P and S, then rotate left at P |
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- case 3: P, S and S's children are black => repaint S red |
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- case 4: S and S's children are black, P is red => exchange colors of S and |
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P |
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- case 5: S and Sr black, Sl is red N left of P => rotate right at S, exchange |
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colors of S and Sl |
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- case 6: S black, Sr is red N left of P => rotate left at P, exchange colors |
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of P and S and make Sr black |
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B(11) |
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looks like case 6: |
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R(8) R(13) |
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first rotate left at P |
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B(N) B(9) B(12) B(16) |
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B(11) |
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B(N) R(10) B(N) B(N) B(N) B(N) |
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B(9) R(13) |
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B(N) B(N) |
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R(8) R(10) B(12) B(16) |
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B(N) B(N) B(N) B(N) B(N) B(N) B(N) B(N) |
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still case 2 rotate left on P |
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exchange colors of P and S and make Sr black. |
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B(11) |
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B(9) R(13) |
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R(9) R(13) |
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B(8) R(10) B(12) B(16) |
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B(8) B(10) B(12) B(16) |
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B(N) B(N) B(N) B(N) B(N) B(N) B(N) B(N) |
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# vim: set et ts=4: |
