Kotlin for loop: in、 until、 step、 downTo

Kotlin for loop: in、 until、 step、 downTo

fun loop1() {
    for (i in 0..5) {
        print("$i ")
    }

    println("\n1-end\n")
}

fun loop2() {
    for (i in 0 until 5) {
        print("$i ")
    }

    println("\n2-end\n")
}

fun loop3() {
    for (i in 0 until (5)) {
        print("$i ")
    }

    println("\n3-end\n")
}

fun loop4() {
    for (i in 0..5 step 2) {
        print("$i ")
    }

    println("\n4-end\n")
}

fun loop5() {
    for (i in 5 downTo 0) {
        print("$i ")
    }

    println("\n5-end\n")
}

fun main(args: Array<String>) {
    loop1()
    loop2()
    loop3()
    loop4()
    loop5()
}

0 1 2 3 4 5 
1-end

0 1 2 3 4 
2-end

0 1 2 3 4 
3-end

0 2 4 
4-end

5 4 3 2 1 0 
5-end

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