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In Swift, the frequency of all the characters in a string means how much time a character repeats in the given string. For example, “Swift tutorial”, here “t” repeats 3 times in the given string, “i” repeat 2 times in the given string. So in this article, we are going to find the frequency of all the characters in the string. Algorithm Step 1 − Create a variable to store a string. Step 2 − Create a dictionary to store the character and its count. Step 3 − Run a for loop to iterate over each character in the ... Read More
Introduction Android is an open-source operating system which is based on the linux kernel which is developed by Google. There are several ways which we can use to parse the data within our android application such as JSON parsing, xml parsing and many more. For parsing of the XML file SAX parser is used. In this article we will take a look at How to parse XML using SAX parser in Android. Implementation We will be creating a simple application in which we will be creating a text view for displaying the heading of our application. After that we are ... Read More
To delete the suffix substring from the given string first, we check if the given substring is present in the specified string or not using the inbuilt hasSuffix() function. Then find the index of the suffix substring using the inbuilt index() function and finally remove the suffix substring. Input String = “Siya love cooking” Substring = “cooking” Output “Siya love” Here, the specified substring is found in the given string, so in the resultant string, we removed the substring from the end of the input string. Algorithm Step 1 − Create a string. Step 2 − Create ... Read More
To delete the prefix substring from the given string first, we check if the given substring is present in the specified string or not using the inbuilt hasPrefix() function. Then find the index of the prefix substring using the inbuilt index() function and finally remove the prefix substring. Input String = “Today is cloudy day” SubString = “Today” Output “is cloudy day” Here, the specified substring is found in the given string, so in the resultant string, we removed the substring from the start of the input string. Algorithm Step 1 − Create a string. Step 2 ... Read More
Introduction Android application package also referred as .apk file is generally installed on a mobile device which helps to run the android application on a mobile device. This apk file is a zip file which contains the application code, resources and a manifest file. AndroidManifest.xml file is considered as one of the most important files of any android application package (apk). It contains essential metadata of any application such as application’s name, version, permissions which are provided in the application to be requested for the user to use the application and many more. In this article we will take a ... Read More
A dictionary is an unordered collection in which data is stored in the form of key-value pairs, where keys are the unique identifiers of any data type like string, integer, etc., that are connected with each value. In Swift, we are allowed to create an empty dictionary. An empty dictionary is a dictionary which does not contain any element or we can say that its size is zero. Syntax let myDicti = [Int:Int]() Or let myDicti:[Int:Int]= [:] Or let myDicti:[String:Int]= [:] So to create an empty dictionary you can use any of the given syntaxes. Here it ... Read More
In Swift, to count how many times a specified character occurs in the given string we create a function. It will increase the value of the counter by one whenever the specified character appears in the given string and then return the final count at the end of the given string. Input String = “Today is cloudy day” Character = “y” Output 3 Where, character “y” appears three times in the given string so the output of the input is 3. Algorithm Step 1 − Create a function that returns the specified character's total occurrence. Step 2 ... Read More
Introduction Many times in android applications we can see that OTP received for user authentication is detected automatically and it is added within the application automatically. Users don't have to add the otp manually. This can be done in android applications with the help of broadcast receivers. In this article we will take a look on How to listen for incoming sms messages in android application Implementation We will be creating a simple application in which we will be displaying two text views. First text view is for displaying the heading of our application. Second text view we will be ... Read More
To convert the array of characters into a string Swift provides the following methods − Using String() initialiser Using append() method Input array = [“S”, “w”, “i”, “f”, “t”] Output Swift Here we join all the characters given in the array to create a string. Method 1: Using String() Initialiser To convert the array of characters into a string we can use String() initialisers. The String() initialiser will create the object of a string. Here we use parameterise string initialiser. Syntax Swift(value) Here value represents the array which we want to convert into a string. ... Read More
To check if the given string is empty or not Swift provides an inbuilt property named as isEmpty. This property will return true if the given string is empty. And return false if the given string is not empty. Here empty string means whose length is 0 or we can say a string that does not contain any character. String 1 = “Swift” String 2 = “” Where string 1 is not an empty string because it contains a sequence of characters or it has some length. Whereas string 2 is an empty string because it does contains anything ... Read More