How to find the Index of Substring in Kotlin - Step by Step Examples

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How to find the Index of Substring in Kotlin ?

Answer

To find the index of a substring in Kotlin, you can use the indexOf method of the String class.

✐ Examples

1 Find Index of Substring in String

In this example,

We create a string named str with a string value.
We use the indexOf method of the string object str to find the index of a specific substring.
The indexOf method returns the starting index of the substring in the string.
Finally, we print the index to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val str = "Hello World";
    val index = str.indexOf("World")
    print("Index of substring is: $index");
}

Output

Index of substring is: 6

2 Find Index of Substring in Another String

In this example,

We create two string variables named str1 and str2 with different values.
We use the indexOf method of str1 to find the index of str2 within str1.
The indexOf method returns the starting index of str2 in str1.
Finally, we print the index to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val str1 = "Hello World";
    val str2 = "World";
    val index = str1.indexOf(str2)
    print("Index of substring is: $index");
}

Output

Index of substring is: 6

Summary

In this tutorial, we learned How to find the Index of Substring in Kotlin language with well detailed examples.

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How to find the Index of Substring in Kotlin - Step by Step Examples

How to find the Index of Substring in Kotlin ?

Answer

✐ Examples

1 Find Index of Substring in String

Kotlin Program

Output

2 Find Index of Substring in Another String

Kotlin Program

Output

Summary

More Kotlin Strings Tutorials