Scala Programming: Exchange the first and last characters in a given string and return the new string
Scala Programming Basic Exercise-8 with Solution
Write a Scala program to exchange the first and last characters in a given string and return the new string.
Sample Solution:
Scala Code:
object scala_basic {
def test(str1: String): String =
{
val len = str1.length
if (len <= 1) str1
else str1.charAt(len - 1) + str1.substring(1, len - 1) + str1.charAt(0)
}
def main(args: Array[String]): Unit = {
println("Result: " + test("Scala"));
println("Result: " + test("abcd"));
println("Result: " + test("ab"));
println("Result: " + test("a"));
}
}
Sample Output:
Result: acalS Result: dbca Result: ba Result: a
Scala Code Editor :
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Previous: Write a Scala program to remove the character in a given position of a given string. The given position will be in the range 0...string length -1 inclusive.
Next: Write a Scala program to create a new string which is 4 copies of the 2 front characters of a given string.If the given string length is less than 2 return the original string.
What is the difficulty level of this exercise?
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