Scala Programming: Check whether a substring presents in the middle of another string

Scala Programming String Exercise-32 with Solution

Write a Scala program to check whether a given substring presents in the middle of another given string. Here middle means difference between the number of characters to the left and right of the given substring not more than 1.

Sample Solution:

Scala Code:

object Scala_String {
  def test(str1: String, str2: String): Boolean = {
    var l = str1.length
    var mid_pos = l / 2;
    if (l < 3)
      false
    if (l % 2 != 0) {
      if (str2.equals(str1.substring(mid_pos - 1, mid_pos + 2))) {
        true
      } else {
        false
      }
    } else if (str2.equals(str1.substring(mid_pos - 1, mid_pos + 2)) || str2
                 .equals(str1.substring(mid_pos - 2, mid_pos + 1))) {
      true
    } else
      false
  }

  def main(args: Array[String]): Unit = {
    val str2 = "abc"
    var str1 = "wwabcwww";
    println("The given string is: " + str1);
    println("Is " + str2 + " appear in middle? " + test(str1, str2));

    str1 = "wwwabcwww";
    println("The given string is: " + str1);
    println("Is " + str2 + " appear in middle? " + test(str1, str2));

    str1 = "wwwwabcwww";
    println("The given string is: " + str1);
    println("Is " + str2 + " appear in middle? " + test(str1, str2));

    str1 = "wwwwwabcwww";
    println("The given string is: " + str1);
    println("Is " + str2 + " appear in middle? " + test(str1, str2));
  }
}

Sample Output:

The given string is: wwabcwww
Is abc appear in middle? true
The given string is: wwwabcwww
Is abc appear in middle? true
The given string is: wwwwabcwww
Is abc appear in middle? true
The given string is: wwwwwabcwww
Is abc appear in middle? false

Scala Code Editor :

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