How to get the current index in for each Kotlin (#9710)
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package com.baeldung.index
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fun main() {
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// Index only
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val colors = listOf("Red", "Green", "Blue")
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for (i in colors.indices) {
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println(colors[i])
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}
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val colorArray = arrayOf("Red", "Green", "Blue")
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for (i in colorArray.indices) {
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println(colorArray[i])
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}
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(0 until colors.size).forEach { println(colors[it]) }
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for (i in 0 until colors.size) {
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println(colors[i])
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}
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// Index and Value
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colors.forEachIndexed { i, v -> println("The value for index $i is $v") }
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for (indexedValue in colors.withIndex()) {
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println("The value for index ${indexedValue.index} is ${indexedValue.value}")
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}
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for ((i, v) in colors.withIndex()) {
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println("The value for index $i is $v")
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}
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colors.filterIndexed { i, _ -> i % 2 == 0 }
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colors.filterIndexed { _, v -> v == "RED" }
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}
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