Kotlin Program to Display Characters from A to Z Using Loop

Displaying characters from A to Z is a common exercise in programming that helps in understanding loops and character manipulation. Kotlin, being a modern and concise programming language, provides several ways to achieve this task. In this article, we will explore three different Kotlin Program to Display Characters from A to Z Using Loop with code examples and outputs.

1. Using a For Loop with Character Range

In this example, we use a for loop with a character range to iterate through the alphabet. Kotlin supports ranges for characters, making it easy to iterate from ‘A’ to ‘Z’.

Code

fun main() {
    for (char in 'A'..'Z') {
        print("$char ")
    }
}

Output

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

2. Using a While Loop

This example demonstrates how to use a while loop to iterate through characters from ‘A’ to ‘Z’. The while loop continues as long as the current character is less than or equal to ‘Z’.

Code

fun main() {
    var char = 'A'
    while (char <= 'Z') {
        print("$char ")
        char++
    }
}

Output

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

3. Using a For Loop with ASCII Values

In this example, we use a for loop to iterate through the ASCII values of characters from ‘A’ to ‘Z’. By converting the ASCII values to characters, we can display the alphabet. This method gives a deeper understanding of how characters are represented in computers.

Code

fun main() {
    for (i in 65..90) {
        print("${i.toChar()} ")
    }
}

3.3 Output

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

4. Conclusion

Using a Kotlin Program to Display Characters from A to Z Using Loop is a fundamental exercise that illustrates the power and simplicity of the language’s control structures. Let’s summarize the methods we explored:

• Using a For Loop with Character Range: This method leverages Kotlin’s support for character ranges, making the code concise and readable.
• Using a While Loop: This approach provides a more traditional way to iterate through characters, suitable for those familiar with C-style loop constructs.
• Using a For Loop with ASCII Values: This method is educational as it highlights how characters are represented using their ASCII values, providing a deeper understanding of character encoding.

Each method offers a unique perspective on solving the problem, allowing you to choose the most suitable approach based on your specific requirements and preferences. Whether you prefer the simplicity of Kotlin’s ranges, the control of a while loop, or the educational value of ASCII manipulation, Kotlin provides the tools to accomplish this task efficiently.