How do I delete a node in trie?

How do I delete a node in trie?

Delete operation should not modify trie. Key present as unique key (no part of key contains another key (prefix), nor the key itself is prefix of another key in trie). Delete all the nodes. Key is prefix key of another long key in trie.

How do I delete a word from trie?

To insert a string WORD in the Trie, we use ”Type 1” query. Example: 1 WORD We will put the integer 1 before the input string WORD to insert it into the Trie. To delete the string WORD from the Trie, we use the “Type 2” query.

What is a key in trie?

Like other search-oriented data structures, a trie stores keys and associated values. Together, the key and value are called an entry. The key is always a string, but the value could be of any type, as the trie just stores and retrieves it as an opaque value.

What is a binary trie?

Binary tries are binary trees. Unlike a BST or DST, in a binary trie, only leaf nodes hold keys. However, like a DST, search in a binary trie is guided by comparing keys one bit at a time (radix search with radix 2)

What is trie used for?

A Trie is a special data structure used to store strings that can be visualized like a graph. It consists of nodes and edges. Each node consists of at max 26 children and edges connect each parent node to its children.

How does a trie work?

A trie is a tree-like data structure whose nodes store the letters of an alphabet. By structuring the nodes in a particular way, words and strings can be retrieved from the structure by traversing down a branch path of the tree. The size of a trie correlates to the size of the alphabet it represents.

What happens when you delete a key in Trie?

The following are possible conditions when deleting key from trie, Key may not be there in trie. Delete operation should not modify trie. Key present as unique key (no part of key contains another key (prefix), nor the key itself is prefix of another key in trie). Delete all the nodes. Key is prefix key of another long key in trie.

Is there a way to delete all nodes in Trie?

Delete operation should not modify trie. Key present as unique key (no part of key contains another key (prefix), nor the key itself is prefix of another key in trie). Delete all the nodes. Key is prefix key of another long key in trie. Unmark the leaf node. Key present in trie, having atleast one other key as prefix key.

Can a trie be used to delete a string?

Trie is an efficient information retrieval data structure. This data structure is used to store Strings and search strings, String stored can also be deleted. Given a Trie root for a larger string super and a string key, delete all the occurences of key in the Trie.

How does the delete ideserve algorithm work in Trie?

The deletion algorithm uses bottom-up recursive algorithm to delete record associated with key ‘k’. The base case for this algorithm is when the node corresponding to last character of key ‘k’ is reached.