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CheezItMan
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Overall well done, but you have a bug in your add method. Take a look at my comments and let me know what questions you have.
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| if @root == nil | ||
| @root = TreeNode.new(key, value) | ||
| return | ||
| end | ||
|
|
||
| node = add_helper(@root, key) | ||
| if key <= node.key | ||
| node.left = TreeNode.new(key, value) | ||
| else | ||
| node.right = TreeNode.new(key, value) | ||
| end |
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This doesn't actually work, you only can construct a 3-node tree your way.
Consider:
Suggested change
| if @root == nil | |
| @root = TreeNode.new(key, value) | |
| return | |
| end | |
| node = add_helper(@root, key) | |
| if key <= node.key | |
| node.left = TreeNode.new(key, value) | |
| else | |
| node.right = TreeNode.new(key, value) | |
| end | |
| @root = add_helper(@root, key, value) | |
| end | |
| def add_helper(current, key, value) | |
| return TreeNode.new(key, value) if current.nil? | |
| if key <= current.key | |
| current.left = add_helper(current.left, key, value) | |
| else | |
| current.right = add_helper(current.right, key, value) | |
| end | |
| return current | |
| end |
| return current.value if current.key == key | ||
| find_helper(current.left, key) | ||
| elsif key > current.key | ||
| return current.value if current.key == key |
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This can't be true.
Suggested change
| return current.value if current.key == key |
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| # Time Complexity: | ||
| # Space Complexity: | ||
| # left, root, right | ||
| def inorder |
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| # Time Complexity: | ||
| # Space Complexity: | ||
| def preorder |
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| # Time Complexity: | ||
| # Space Complexity: | ||
| def postorder |
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| # Time Complexity: | ||
| # Space Complexity: | ||
| def height |
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did not implement height successfully