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We've kind of already implemented this in our put method. Let us look at it again in isolation.Exampleget(key) { let hashCode = hash(key); for(let i = 0; i < this.container[hashCode].length; i ++) { // Find the element in the chain if(this.container[hashCode][i].key === key) { return this.container[hashCode][i]; } } return undefined; }You can test it using.Examplelet ht = new HashTable(); ht.put(10, 94); ht.put(20, 72); ht.put(30, 1); ht.put(21, 6); ht.put(15, 21); ht.put(32, 34); console.log(ht.get(20)); console.log(ht.get(21)); console.log(ht.get(55)); console.log(ht.get(32));OutputThis will give the output.{ key: 20, ... Read More
The HTML tag is used to get user input in HTML. To give a limit to the input field, use the min and max attributes, which is to specify a maximum and minimum value for an input field respectively.The max and min attributes are used with number, range, date, datetime, datetime-local, month, time and week input types.ExampleYou can try to run the following code to give a limit to the input field in HTML − HTML input number Mention any number between 1 to 10
To remove elements, we simply need to find them and remove them using a simple splice function call that removes elements in place from an array.Let us look at the implementation of the same − Exampleremove(key) { let hashCode = this.hash(key); for (let i = 0; i < this.container[hashCode].length; i++) { // Find the element in the chain if (this.container[hashCode][i].key === key) { this.container[hashCode].splice(i, 1); return true } } return false; }You can test this using − Examplelet ht = ... Read More
To show and hide div on mouse click using jQuery, use the toggle() method. On mouse click, the div is visible and on again clicking the div, it hides.ExampleLive Demo $(document).ready(function(){ $('#show').click(function() { $('.menu').toggle("slide"); }); }); Click to Show/ Hide div India US UK Australia
Now let us create a forEach function that'll allow us to loop over all key-value pairs and call a callback on those values. For this, we just need to loop over each chain in the container and call the callback on the key and value pairs.ExampleforEach(callback) { // For each chain this.container.forEach(elem => { // For each element in each chain call callback on KV pair elem.forEach(({ key, value }) => callback(key, value)); }); }You can test this using.Examplelet ht = new HashTable(); ht.put(10, 94); ht.put(20, 72); ht.put(30, 1); ht.put(21, 6); ... Read More
Sometimes we need to combine containers together using a join function and get a new container. We'll write a static join method that takes in 2 HashTables and creates a new HashTable with all the values. For the sake of simplicity, we'll let the values from the second one override the values for the first one if there are any keys present in both of them. Examplestatic join(table1, table2) { // Check if both args are HashTables if(!table1 instanceof HashTable || !table2 instanceof HashTable) { throw new Error("Illegal Arguments") } let combo = ... Read More
Here is the complete implementation of the HashTable class. This could of course be improved by using more efficient data structures and collision resolution algorithms.Exampleclass HashTable { constructor() { this.container = []; // Populate the container with empty arrays // which can be used to add more elements in // cases of collisions for (let i = 0; i < 11; i++) { this.container.push([]); } } display() { this.container.forEach((value, index) => ... Read More
To hide and show an HTML element using jQuery, use the hide and show() methods. Here, the element is hidden and shown on button click,ExampleLive Demo $(document).ready(function(){ $("#visible").click(function(){ $("p").show(); }); $("#hidden").click(function(){ $("p").hide(); }); }); This text will show on clicking "Show element" button, and hide on clicking "Hide element" button. Hide element Show element
Data hidingIn Python, we use double underscore before the attributes name to make them inaccessible/private or to hide them.The following code shows how the variable __hiddenVar is hidden.Exampleclass MyClass: __hiddenVar = 0 def add(self, increment): self.__hiddenVar += increment print (self.__hiddenVar) myObject = MyClass() myObject.add(3) myObject.add (8) print (myObject.__hiddenVar)Output 3 Traceback (most recent call last): 11 File "C:/Users/TutorialsPoint1/~_1.py", line 12, in print (myObject.__hiddenVar) AttributeError: MyClass instance has no attribute '__hiddenVar'In the above program, we tried to access hidden variable outside the class using object and it threw an ... Read More
The tree represents hierarchical structures like organization hierarchy charts, file systems, etc. To put it more formally, a tree can be defined recursively (locally) as a collection of nodes (starting at a root node), where each node is a data structure consisting of a value, together with a list of references to nodes (the "children"), with the constraints that no reference is duplicated (i.e., each child has exactly one parent).