Produce output, that counts by 10, from 1000 to 0 using a while loop (Kotlin)-CodePudding

The title speaks for itself. I know how to create a while loop count down from 1000 to 0, that counts down by one:

fun main(args: Array<String>) {
var i = 1000
while (i > 0) {
println(i) 
i--
}}

BUT, I need to count down by ten: 1000, 990, 980. I'm struggling to wrap my head around it for whatever reason. Willing to lend me a hand?

(Please provide explanation. I don't just want the answer, as I want to understand! I appreciate you all!)

CodePudding user response：

In the while loop, you just have to change i-- to i -=10. But this is little more straight forward using the for loop.

for(i in 1000 downTo 0 step 10) {
    println(i)
}

CodePudding user response：

If the decreasing interval is 10, your code i-- needs to be modified to i -= 10

i-- is equivalent to i = i -1, subtracting 1 from the original, which does not meet your requirements.


fun main() {
    var i = 1000
    while (i >= 0) {
        println(i)
        i -= 10
    }
}