Kotlin Program to Find the Largest Among Three Numbers

In this program, you’ll learn to find the largest among three numbers using if else and when statement in Kotlin.

Example 1: Find Largest Among three numbers using if..else statement

1. `fun main(args: Array<String>) {`
2. ` val n1 = -4.5`
3. ` val n2 = 3.9`
4. ` val n3 = 2.5`
5. ` if (n1 >= n2 && n1 >= n3)`
6. ` println("\$n1 is the largest number.")`
7. ` else if (n2 >= n1 && n2 >= n3)`
8. ` println("\$n2 is the largest number.")`
9. ` else`
10. ` println("\$n3 is the largest number.")`
11. `}`

When you run the program, the output will be:

`3.9 is the largest number.`

In the above program, three numbers `-4.5`, `3.9` and `2.5` are stored in variables n1, n2 and n3 respectively.

Then, to find the largest, the following conditions are checked using if else statements

• If n1 is greater or equals to both n2 and n3, n1 is the greatest.
• If n2 is greater or equals to both n1 and n3, n2 is the greatest.
• Else, n3 is the greatest.

The greatest number can also be found using a `when` statement.

Example 2: Find the largest number among three using when statement

1. `fun main(args: Array<String>) {`
2. ` val n1 = -4.5`
3. ` val n2 = 3.9`
4. ` val n3 = 5.5`
5. ` when {`
6. ` n1 >= n2 && n1 >= n3 -> println("\$n1 is the largest number.")`
7. ` n2 >= n1 && n2 >= n3 -> println("\$n2 is the largest number.")`
8. ` else -> println("\$n3 is the largest number.")`
9. ` }`
10. `}`

When you run the program, the output will be:

`5.5 is the largest number.`

In the above program, instead of using `an if..else if..else` block, we use `when` statement.

So, the above conditions in both the programs are the same.