android - Kotlin 中的 For 循环

Question

我是 Kotlin 的新手，请帮助我实现这一目标。

int number[] = {5,4,1,3,15}

for(int i = number.length; i > 0; i--)
{
   Log.e("number", number[i])
}

Answer 1

试试这个

Kotlin中for循环的

语法是:

for (item in collection) {
    // body of loop
}

body

for (item: Int in ints) {
    // body of loop
}

示例代码

for (i in 0..5) {
        println(i) // 0,1,2,3,4,5   --> upto 5
}

或

 for (i in 0 until 5) {
        println(i) // 0,1,2,3,4    --> upto 4
 }

for loop in array

var arr = arrayOf("neel", "nilu", "nilesh", "nil")

    for (item in arr)
    {
        println(item)
    }

iterate through an array with an index.

 var arr = arrayOf("neel", "nilu", "nilesh", "nil")
for (item in arr.indices) {

        // printing array elements having even index only
        if (item%2 == 0)
            println(language[item])
    }

更多信息请查看 for loop in Kotlin

这也是 for loop in Kotlin