Kotlin program to find the largest number among three numbers

Comprehensive Collection of Kotlin Examples

In this program, you will learn to use if else and when statements in Kotlin to find the largest number among three numbers.

Example1Use if..else statements to find the largest in three numbers

fun　main(args:　Array<String>)　{
　　　　val　n1　=　-4.5
　　　　val　n2　=　3.9
　　　　val　n3　=　2.5
　　　　if (n1　>=　n2　&&　n1　>=　n3)
　　　　　　　　println("$n1　is the largest number.")
　　　　else if (n2　>=　n1　&&　n2　>=　n3)
　　　　　　　　println("$n2　is the largest number.")
　　　　else
　　　　　　　　println("$n3　is the largest number.")
}

When running the program, the output is:

3.9　is the largest number.

In the above program, three numbers-4.5,3.9and2.5are stored in variables n1, n2and n3in.

Then, to find the largest number, use if else statements to check the following conditions

• if n1is greater than or equal to n2and n3, n1is the largest.

• if n2is greater than or equal to n1and n3, n2is the largest.

• otherwise, n3is the largest.

You can also find the largest number using the when statement.

This is the equivalent Java code:Java program to find the largest number among three

Example2：Use when statement to find the largest number among three

fun　main(args:　Array<String>)　{
　　　　val　n1　=　-4.5
　　　　val　n2　=　3.9
　　　　val　n3　=　5.5
　　　　when　{
　　　　　　　　n1　>=　n2　&&　n1　>=　n3　->　println("$n1　is the largest number.")
　　　　　　　　n2　>=　n1　&&　n2　>=　n3　->　println("$n2　is the largest number.")
　　　　　　　　else　->　println("$n3　is the largest number.")
　　　　}
}

When running the program, the output is:

5.5　is the largest number.

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

Therefore, the above conditions are the same in the two programs.

Comprehensive Collection of Kotlin Examples