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largest key in a binary search tree

Posted on 2012-03-31
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Last Modified: 2012-03-31
To find the largest key in a binary search tree, is this correct:  start at the root, and recursively visit the node.  When the right child is null, the node contains the largest key.
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Question by:HLRosenberger
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GwynforWeb earned 500 total points
ID: 37791607
That is correct, ie always go right as everything to the left will be smaller. Until there is  no right child to visit.

 In pseudo code it becomes


function findLargest(node){
  if (node.rightChild == null) return node.value
  return findLargest(node.rightChild)
}

findLargest(root)
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by:HLRosenberger
ID: 37791625
Thank You
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