4 lines
124 B
Bash
4 lines
124 B
Bash
preorder: 1 2 4 7 5 3 6 8 9
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inorder: 7 4 2 5 1 8 6 9 3
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postorder: 7 4 5 2 8 9 6 3 1
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level-order: 1 2 3 4 5 6 7 8 9
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