Piece of alphabet

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Write a program that reads a string and output true only when the letters of this string form a substring of the ordered English alphabet, for example, "abc", "xy", "pqrst".

Otherwise, it should print out false.

Note: string can consist of a single character. Assume an empty string as an alphabet substring.

Sample Input 1:

abc

Sample Output 1:

true

Sample Input 2:

bce

Sample Output 2:

false

Write a program in Kotlin

Code Editor
IDE100

fun main() {

// write your code here

}

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