Step by Step solution about How to resolve the algorithm String interpolation (included) step by step in the Kotlin programming language

Kotlin String Interpolation

This code demonstrates string interpolation in Kotlin, a feature that allows you to embed expressions or variables within a string literal.

Example:

val s = "little"
println("Mary had a $s lamb")

Explanation:

• The s variable is interpolated into the string literal using the $ symbol.
• The result is a string that reads "Mary had a little lamb".

Expressions within Interpolation:

println("Mary had a ${s.toUpperCase()} lamb")

• Here, an expression s.toUpperCase() is interpolated into the string.
• The expression calculates the uppercase version of the string s and then it is embedded into the string.

Immediate Variables or Expressions:

println("Mary had a ${s}r lamb")

• If a simple variable s is immediately followed by a letter, digit, or underscore, it must be treated as an expression.
• In this case, the r character is added to the variable s, resulting in a string "littler".

// version 1.0.6

fun main(args: Array<String>) {
   val s = "little"
    // String interpolation using a simple variable
    println("Mary had a $s lamb")

    // String interpolation using an expression (need to wrap it in braces)
    println("Mary had a ${s.toUpperCase()} lamb")

    // However if a simple variable is immediately followed by a letter, digit or underscore
    // it must be treated as an expression
    println("Mary had a ${s}r lamb") // not $sr    
}