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PE_5.kt
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PE_5.kt
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package kotlin_practice
/**
* @author bertking
* @date 2019/4/19
*/
class PE_5 {
/**
* NO use
*/
fun isPrime(value: Long): Boolean {
for (i in 2..Math.sqrt(value.toDouble()).toLong()) {
if (value % i == 0L) {
return false
}
}
return true
}
/**
* NO use
*/
fun primeInRange(value: Long): ArrayList<Long> {
var list = arrayListOf<Long>()
for (i in 2..value) {
if (isPrime(i)) {
list.add(i)
}
}
return list
}
fun judgeValueDivideByList(list: ArrayList<Long>, value: Long): Boolean {
var i = 0
while (i < list.size) {
if (value % list[i] == 0L) {
// println("==="+i)
i++
} else {
break
}
}
return i == list.size
}
}
fun main(args: Array<String>) {
var solution = PE_5()
/**
* 选择这个除数很重要
*/
val list = arrayListOf<Long>(12, 14, 11, 13, 17, 19, 15, 16, 20, 18)
println(list)
/**
* 这里建议阶段性测试
*/
for (i in 10000..232792560) {
if (solution.judgeValueDivideByList(list, i.toLong())) {
println(i)
}
}
}