Example: Display Prime Numbers Between two Intervals
fun main(args: Array<String>) {
var low = 20
val high = 50
while (low < high) {
var flag = false
for (i in 2..low / 2) {
// condition for nonprime number
if (low % i == 0) {
flag = true
break
}
}
if (!flag)
print("$low ")
++low
}
}
When you run the program, the output will be:
23 29 31 37 41 43 47
In this program, each number between low and high are tested for prime. The inner for loop checks whether the number is prime or not.
You can check: Kotlin Program to Check Prime Number for more explanation.
The difference between checking a single prime number compared to an interval is, you need to reset the value of flag = false on each iteration of while loop.