fold kotlin
package com.bezkoder.kotlin.fold
fun main(args: Array<String>) {
println(listOf(1, 2, 3, 4, 5).fold(0) { total, item -> total + item })
// 15
println(listOf(1, 2, 3, 4, 5).foldRight(0) { item, total -> total + item })
// 15
println(listOf(1, 2, 3, 4, 5).fold(1) { mul, item -> mul * item })
// 120
println(listOf(1, 2, 3, 4, 5).foldRight(1) { item, mul -> mul * item })
// 120
println(listOf(0, 1, 2, 3, 4, 5)
.foldIndexed(0) { index, total, item -> if (index % 2 == 0) (total + item) else total })
// 6
println(listOf(0, 1, 2, 3, 4, 5)
.foldRightIndexed(0) { index, item, total -> if (index % 2 == 0) (total + item) else total })
// 6
}
3.8
10
listOf(1, 2, 3).fold(0) { sum, element -> sum + element }
Thank you!
10
0
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