Kotlin program sorts elements in alphabetical order

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In this program, you will learn to use for loops and if else statements in Kotlin to sort elements in alphabetical order.

Example: Program to sort strings in alphabetical order

fun main(args: Array<String>) {
　　　　val words = arrayOf("Ruby", "C", "Python", "Java")
　　　　for (i in 0..2) {
　　　　　　　　for (j in i　+　1..3) {
　　　　　　　　　　　　if (words[i].compareTo(words[j]) > 0) {
　　　　　　　　　　　　　　　　//　words[i] and words[j] are swapped　
　　　　　　　　　　　　　　　　val temp = words[i]
　　　　　　　　　　　　　　　　words[i] = words[j]
　　　　　　　　　　　　　　　　words[j] = temp
　　　　　　　　　　　　}
　　　　　　　　}
　　　　}
　　　　println("Sorted according to dictionary order:")
　　　　for (i in 0..3) {
　　　　　　　　println(words[i])
　　　　}
}

When running the program, the output is:

Sorted according to dictionary order:
C
Java
Python
Ruby

In the above program, the words to be sorted are5The list of words is stored in the variable word.

Then, we traverse each word (words [i]) and compare it with all the words after it in the array (words [j]). This is done by using the compareTo() method of the string.

If the return value of compareTo() is greater than 0, it must be swapped in position, that is, words[i] after words[j]. Therefore, in each iteration, words[i] contains the earliest word.

This is the equivalent Java code:Java Program Sorts Words in Dictionary Order

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