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How to Insert a Character in String at Specific Index in Swift?

In Swift, if you want to insert a character into a string at a specific index, you'll first need to get a reference to the desired index using the index(_:offsetBy:) method or other similar methods of the String type. Once you have the index, you can use the insert(_:at:) method to insert the character.

Here's how you can do it:

var str = "Helo, World!"
let char: Character = "l"

// Insert the character 'l' at the 3rd position
let index = str.index(str.startIndex, offsetBy: 3)
str.insert(char, at: index)

print(str)  // "Hello, World!"

In this example, we're inserting the character 'l' into the string "Helo, World!" at the 3rd position to correct it to "Hello, World!".

Note: Be careful while using the index(_:offsetBy:) method. If the offset goes beyond the string's range, it will cause a runtime error. Always ensure that the offset is within the string's bounds.

  1. Swift insert character at specific index in string:

    • To insert a character at a specific index in a Swift string, you can use the insert(_:at:) method.
    • Example:
      var message = "Hello, world!"
      let index = message.index(message.startIndex, offsetBy: 7)
      message.insert(contentsOf: " Swift", at: index)
      print(message)
      // Output: Hello, Swift world!
      
  2. Inserting character into Swift string at index:

    • Use the insert(_:at:) method to insert a character at a specific index in a Swift string.
    • Example:
      var word = "Swift"
      let index = word.index(word.startIndex, offsetBy: 2)
      word.insert("i", at: index)
      print(word)
      // Output: Swiift
      
  3. How to add character at a particular position in Swift string:

    • Adding a character at a specific position in a Swift string involves using the insert(_:at:) method.
    • Example:
      var phrase = "Hello, there!"
      let position = 7
      phrase.insert("s", at: phrase.index(phrase.startIndex, offsetBy: position))
      print(phrase)
      // Output: Hello, s there!
      
  4. Swift string insert method at specific position:

    • The insert(_:at:) method is used to insert characters into a Swift string at a specific position.
    • Example:
      var text = "Swift programming"
      let position = 5
      text.insert(contentsOf: " awesome", at: text.index(text.startIndex, offsetBy: position))
      print(text)
      // Output: Swift awesome programming
      
  5. Swift modify string at specific position with character:

    • Modifying a Swift string at a specific position with a character can be done using the insert(_:at:) method.
    • Example:
      var name = "John"
      let position = 2
      name.insert("n", at: name.index(name.startIndex, offsetBy: position))
      print(name)
      // Output: Jonah
      
  6. Inserting a character into a Swift string at a given index:

    • Use the insert(_:at:) method to insert a character at a specific index in a Swift string.
    • Example:
      var word = "Swift"
      let index = word.index(word.startIndex, offsetBy: 3)
      word.insert("y", at: index)
      print(word)
      // Output: Swyift
      
  7. String manipulation in Swift: insert character at index:

    • String manipulation in Swift can include using the insert(_:at:) method to add characters at specific indices.
    • Example:
      var text = "Programming"
      let position = 4
      text.insert("m", at: text.index(text.startIndex, offsetBy: position))
      print(text)
      // Output: Progmramming
      
  8. Swift substring and insert character at specific position:

    • Combining substring operations with the insert(_:at:) method allows inserting characters at specific positions in Swift strings.
    • Example:
      var phrase = "Hello, world!"
      let substring = phrase.prefix(5)
      phrase.insert(contentsOf: " Swift", at: phrase.index(phrase.startIndex, offsetBy: 5))
      print(phrase)
      // Output: Hello Swift, world!
      
  9. Adding a character at a specific location in Swift string:

    • Adding a character at a specific location in a Swift string can be done using the insert(_:at:) method.
    • Example:
      var text = "Swift"
      let position = 2
      text.insert("i", at: text.index(text.startIndex, offsetBy: position))
      print(text)
      // Output: Siwft