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  1. Practice
  2. Data Structures
  3. Trees
  4. Tree: Height of a Binary Tree
  5. Discussions

Tree: Height of a Binary Tree

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  • coeus + 0 comments

    For anyone having problem in sample test case. Please note down that they have considerd height of root as '-1'. So your program should return '-1' when root is NULL.

  • Hlodowig + 0 comments

    Interesting how most Java solutions subtract, mine does not (don't think it's better, simply different). Of course it uses more if's. Also, IMHO Math.max() is overkill for just two values.

    public static int height(Node root) {

    int leftHeight = 0;
    int rightHeight = 0;

    if (root.left != null) {
        leftHeight = 1 + height(root.left);
    }

    if (root.right != null) {
        rightHeight = 1 + height(root.right);
    }

    return leftHeight > rightHeight ? leftHeight : rightHeight;
}

  • [deleted] + 0 comments

    Not python, or scala, or haskell?

  • blainevanderson + 0 comments

    There appears to be an error with the code, where the main function is trying to call "getHeight", but the function is named "height". Just thought admins might like to know :)

  • isarkisov + 0 comments
    def height(root):
    if root is None:
        return -1
    return max(1 + height(root.left), 1 + height(root.right))
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