在 Scala 中打印数组 [英] Printing array in Scala

问题描述

我在使用最基本的 Scala 操作时遇到问题，这让我很抓狂.

val a = Array(1,2,3)println(a) 结果是 [I@1e76345println(a.toString()) 结果是 [I@1e76345println(a.toString) 结果是 [I@1e76345

谁能告诉我如何在不编写自己的函数的情况下打印数组，因为这很愚蠢.谢谢！

解决方案

mkString 将集合(包括 Array)逐个元素转换为字符串表示.

mkString>

println(a.mkString(" "))

可能就是你想要的.

I am having problem with most basic Scala operation and it is making me crazy.

val a = Array(1,2,3)

println(a)   and result is [I@1e76345

println(a.toString()) and result is [I@1e76345

println(a.toString) and result is [I@1e76345

Can anyone tell me how to print array without writing my own function for doing that because that is silly. Thanks!

解决方案

mkString will convert collections (including Array) element-by-element to string representations.

println(a.mkString(" "))

is probably what you want.

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