Tag: recursive-datastructures

Nested `defaultdict of defaultdict of defaultdict` each with a backreference

defaultdict python recursive-datastructures trie

Using tree = lambda: dedfaultdict(tree), I can replace the following code: with: What I actually want is for each dictionary node to have a backreference to its parent dictionary node. I can do this as follows: (proof that this works: link) So, given that I was able to use tree = lambda: defaultdict(tree) to replace node = node.setdefault(ch, {}) with

Insertion Sort Recursion not picking up last element [5,4,3,2,1,0] After sortin [1,2,3,4,5,0] Where last element not sorted

insertion-sort python recursive-datastructures

I have been stuck in the middle of the problem I am writing Recursive insertion sort on my own. The program works well but didn’t pick the last element to sort [5,4,3,2,1,0]. After the execution: [1,2,3,4,5,0] Answer try this: output:

how to build a tree for ordered numbers?

data-structures dictionary python recursive-datastructures tree

I am trying build a tree (dictionary ) from input numbers. My main criteria for the tree is all the nodes in a level are in a same range. ( a series of data from parent) I think you will get idea from my examples- Please see the example I tried to build a tree initially. This will work only