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In Swift, we can merge two or more integer arrays without using the library function. So Swift provides an addition assignment(+=) operator to merge two integer arrays. Using this operator we will merge two arrays and assign the result into a new array. Syntax newArray += array Here, newArray is the resultant array and array represents the array which we want to merge. Algorithm Step 1 − Create a function that takes two arrays as an argument and returns a merged array. Step 2 − Inside the function create an empty array to store the resultant array. Step ... Read More
To merge the content of two dictionaries Swift provides a pre-defined function named merging(_:uniqueKeysWith:). This function creates a new dictionary by merging the elements of two dictionaries. It also uses a combining closure to check the values for duplicate keys. Syntax func merging(otherDict){comClosure} This function takes two parameters and they are − OtherDict − It is a dictionary to merge. comClosure − It is a closure which takes current and new values for the duplicate keys and then returns the desired value for the output dictionary. It is an optional parameter that means if you don’t want ... Read More
In Swift, we can iterate through each character of the string very easily. For the iteration, Swift provides the following methods − Using for-in loop Using forEach() function Using enumerated() function Method 1: Using for-in loop We can use a for-in loop for the iteration. It iterates through each character of the string and then performs the expressions given inside the loop body or can display them on the output screen. Syntax for x in mstr{ // body } Here mstr is the string and x stores the current character from the string in ... Read More
Swift provides a function named insert() to insert a string into another string. The insert(at:) function adds a new character or string in the current string at the specified position. Input String = “Program to learn” New String = “Swift” Output String = Swift Program to learn” Here we insert a new string in the input String at index 1. So we get “Swift Program to learn” in the output. Syntax func insert(newVal, at: idx) Where newVal represents a new string which we want to insert into the given string, and idx is the valid index to ... Read More
A dictionary is a collection of key-value pairs. Which means keys and values are interrelated with each other. So using a value we can easily get single or multiple keys from the given dictionary. Algorithm Step 1 − Create a dictionary with key-value pairs. Step 2 − Then create a function which will return the key from the dictionary using the value. Step 3 − Inside the function we run a for-in loop which iterates over the key-value pairs of the given dictionary. Step 4 − Now check if the current value is equal to the specified value. If ... Read More
Introduction Many times in android applications we can get to see when the user changes the screen orientation of the device from portrait to landscape. In that case we can get to see that some of the views within the application loses its state. For example when a user enters any data in a text file and then changes the screen orientation from portrait to landscape, in that case the data which is already entered gets cleared up. To prevent this we have to store the state of that view. In this article we will take a look on How ... Read More
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