Merge pull request #7 from devvsakib/devvsakib

new problem

Author: devvsakib

L-I/0002 isWordExit ( L-I )/IsExitsInArray.js

@@ -0,0 +1,14 @@
+class Dictonary {
+    constructor(arr) {
+        this.dict = new Set(arr);
+    }
+
+    isInDict(word) {
+        return this.dict.has(word)
+    };
+};
+
+const isExits = new Dictonary(['tea', 'mug', 'jug', 'bug']);
+
+console.log(isExits.isInDict('cat'));
+console.log(isExits.isInDict('bug'));

L-I/0002 isWordExit ( L-I )/README.md

@@ -0,0 +1,56 @@
+# 0002 isWordExit ( L-I )
+
+## Problem
+
+Write a dictionary class, you have a setup function that takes in an array of words and a search function that takes in a word and returns true if the word is in the dictionary and false if it is not.
+
+## Test Cases
+
+- Input: ["hello", "world", "this", "is", "a", "test"], "test", Output: true
+- Input: ["hello", "world", "this", "is", "a", "test"], "how", Output: false
+
+## Solution
+
+```javascript
+class Dictonary {
+    constructor(arr) {
+        this.dict = new Set(arr);
+    }
+
+    isInDict(word) {
+        return this.dict.has(word)
+    };
+};
+
+const isExits = new Dictonary(['tea', 'mug', 'jug', 'bug']);
+
+console.log(isExits.isInDict('cat'));
+console.log(isExits.isInDict('bug'));
+```
+
+## How it works
+
+- We create a class called Dictonary.
+- We create a constructor that takes in an array of words.
+- We create a Set from the array and assign it to a property called dict.
+- We create a method called isInDict that takes in a word.
+- We check if the word is in the dict Set.
+- We return the result.
+
+## References
+
+- [Wikipedia](https://en.wikipedia.org/wiki/Set_(abstract_data_type))
+- [GeeksforGeeks](https://www.geeksforgeeks.org/set-in-javascript/)
+- [StackOverflow](#)
+
+## Problem Added By
+
+- [GitHub](https://www.github.com/devvsakib)
+- [LinkedIn](https://www.linkedin.com/in/devvsakib)
+- [Twitter](https://twitter.com/devvsakib)
+
+## Contributing
+
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+Please make sure to update tests as appropriate.