Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
The isUndefined() method in AngularJS basically checks if a reference is defined or not. This method will return True if the reference passed inside the function is not defined or undefined, else it will return False.Syntaxangular.isUndefined(value)Example − Check if the reference isUndefined or notCreate a file "isUndefined.html.3" in your Angular project directory and copy-paste the following code snippet. angular.isUndefined() Welcome to Tutorials Point AngularJS | ... Read More
The forEach() function in AngularJS uses the Iterator object to iterate over the collection of items or objects or an array. The iterator function is called with the iterator object(value, key, obj) where, value represents the object property or an array element, key specifies the object property key or array element index, andobj represents the whole object.Note that the forEach() function does not iterate over the inherited properties.Syntaxangular.forEach(obj, iterator, [context])Example − Iterate the values using forEach()Create a file "forEach.html" in your Angular project directory and copy-paste the following code snippet. angular.forEach() ... Read More
The ng-change directive in AngularJS evaluates a given expression whenever the user changes the input. On every change, the ngChange directive is fired and the expression is evaluated immediately. The JavaScript onChange event only triggers at the end of a change (when the user leaves the form element or presses the key).Note − This directive also requires ngModel to be present.Syntax..Content..Example − ngChange DirectiveCreate a file "ngChange.html" in your Angular project directory and copy-paste the following code snippet. ngChange Directive ... Read More
The ng-keydown directive in AngularJS basically specifies a custom event on pressing the key. We can perform multiple functions whenever the keydown event is called. This event also supports different types of elements like , and .Syntax..content..Example − ngKeydown DirectiveCreate a file "ngKeydown.html" in your Angular project directory and copy-paste the following code snippet. ngKeydown Directive .keyDown { background-color: blue; color: white; ... Read More
Suppose we have a directed graph with n colored nodes and m different edges. And the nodes are numbered from 0 to n-1. We have a string col with lowercase letters, where col[i] represents the color of the ith node in this graph (0-indexed). We also have an edge list where edges[j] = (u, v) represents, there is an edge between u and v.A valid path in the graph is a sequence of nodes xi for all i from 1 to k, such that there is a directed edge from xi to xi+1. The color of the path is the ... Read More
Suppose we have a list of intervals, where intervals[i] has a pair (left_i, right_i) represents the ith interval starting at left_i and ending at right_i (both inclusive). We also have another array called queries. The answer to the jth query is the size of the smallest interval i such that left_i
Suppose there is an array called rooms. where rooms[i] contains a pair [roomId_i, size_i] denotes a room whose id is roomId_i and size is size_i. All room numbers are distinct. We also have another array queries, where queries[j] contains a pair [preferred_j, minSize_j]. The answer to the jth query is the room number id of a room such that −The room has size of at least minSize_j, and|id - preferred_j| is minimized.Now, if there is a tie in the absolute difference, then use the room with the smallest id. If there is no such room, return -1. So we have ... Read More
Suppose we have a value n and another list of pairs called restrictions. We want to build n new buildings in a city. But there are few restrictions. We can built in a line and buildings are labeled from 1 to n. The restrictions has two parameters, so restrictions[i] = (id_i, max_height_i) indicates id_i must have height less than or equal to max_height_i. The city restrictions on the heights of the new buildings are as follows −The height of each building must be 0 or positive values.First building height must be 0.The difference between any two adjacent buildings height cannot ... Read More
Suppose we have two arrays arr1 and arr2. The XOR sum of a list is the bitwise XOR of all of its elements. If the list has only one element, then its XOR sum will be the element itself. Now, consider the list has the result of arr1[i] AND arr2[j] (bitwise AND) for every index pair (i, j) where 0
Suppose we have a string s. We have to perform the following operation on s until we get a sorted string −Select largest index i such that 1