Swift Strings and Characters Quiz

 let str = "Hello, World!"
 let substring = str.prefix(5)
 print(substring) 

 let str = #"This is a "quoted" string."#
 print(str) 

  let str = "Hello, World!"
  let count = str.components(separatedBy: "o").count - 1
  print(count) 

 var str = "Hello, World!"
 str.remove(at: str.index(str.startIndex, offsetBy: 7))
 print(str) 

 let str = "Hello, World!"
 let range = str.index(str.startIndex, offsetBy: 7)..<str.endIndex
 let substring = str[range]
 print(substring) 

 let str = "Hello, World!"
 let index = str.firstIndex(of: ",") ?? str.endIndex
 let substring = str[..<index]
 print(substring) 

 let str = "Apple, Banana, Cherry"
 let components = str.split(separator: ",")
 let count = components.count
 print(count) 

 let str = "   Hello, World!   "

  let number = 42
  let str = String(number)
  let result = str.count
  print(result) 

var str1 = "" 
               var str2 = String()
 
 if (str1 == str2) {
    print("Equal")
 } else {
     print("Not Equal")
 }