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@ -19,9 +19,11 @@ Trie is a very useful and special kind of data structure for string processing.
Trie is a tree of nodes, where the specifications of a node can be given as below: Trie is a tree of nodes, where the specifications of a node can be given as below:
Each node has, Each node has,
1. An array of datatype `node` having the size of the alphabet(see the note below). 1. An array of size of the alphabet(see the note below).
2. A boolean variable. 2. A boolean variable.
**Note:** For an easy understanding purpose, we are assuming that all strings contain lowercase alphabet letters, i.e. `alphabet_size` is $26$. **We can convert characters to a number by using `c-'a'`, `c` is a lowercase character.**
**We will see usages of these two variables soon.** **We will see usages of these two variables soon.**
```cpp ```cpp
@ -41,8 +43,6 @@ struct trie_node
}; };
``` ```
**Note:** For an easy understanding purpose, we are assuming that all strings contain lowercase alphabet letters, i.e. `alphabet_size` is $26$. **We can convert characters to a number by using `c-'a'`, `c` is a lowercase character.**
![enter image description here](https://github.com/KingsGambitLab/Lecture_Notes/blob/master/articles/Akash%20Articles/md/Images/Trie/3.png) ![enter image description here](https://github.com/KingsGambitLab/Lecture_Notes/blob/master/articles/Akash%20Articles/md/Images/Trie/3.png)
Now, we have seen how a trie node looks like. Let's see how we are going to store strings in a trie using this kind of node. Now, we have seen how a trie node looks like. Let's see how we are going to store strings in a trie using this kind of node.