Found 517 Articles for Swift

To print even-length words we calculate the length of each word using the count property. Then we check if the length of the word is even or not. If yes, then we will print the word. Otherwise not. Input Str = “Learn Swift language” Output language Here the given string has three words: “Learn", “Swift”, and “language”. But the output is “language” because its length is even that is 8. Algorithm Step 1 − Create a variable to store a string. Step 2 − Split the string into words using the split() function. Step 3 − Now ... Read More

In Swift, a dictionary is used to create an unordered collection in which the data is stored in the form of key-value pairs. So to print a dictionary we will use the following methods − Using for-in loop Using description property Method 1: Using for-in Loop In Swift, we can print all the key-value pairs of the given dictionary with the help of a for-in loop. The for-in loop iterates through each pair of the dictionary and displays them on the output screen. Syntax for(key, value) in dict { print(“\(key) = \(value)”) } Here, ... Read More

A Swift dictionary is an unordered collection in which data is stored as key-value pairs. So to pass a dictionary as a function argument simply create a function with an argument of dictionary type and a dictionary, then pass it to the function at the time of function calling. Syntax func functionName(dict:[DataType:DataType]){ // Body } So this is how you can define a function which takes a dictionary as its argument. functionName(dict:DictionayName) This is how you can pass a dictionary as a function argument. Dict.last Here Dict is the name of the dictionary from ... Read More

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

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

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