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Refine kotlin code (#1241)

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* style(kotlin): Improve kotlin codes readability.

* remove redundant quotes.

* style(kotlin): improve codes readability.

* style(kotlin): refine kotlin codes.

* Create kotlin.yml

* Create kotlin.yml

* Delete .github/workflows/kotlin

* Delete .github/workflows/main.yml

* Create kotlin.yml

* Update kotlin.yml

* Delete .github/workflows/kotlin.yml

* Create hello_world_workflow.main.kts

* Delete .github/workflows/hello_world_workflow.main.kts

* remove empty line
This commit is contained in:
curtishd
2024-04-09 16:26:58 +08:00
committed by GitHub
parent 41dd677338
commit 896d9a64f6
22 changed files with 158 additions and 112 deletions
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34
codes/kotlin/chapter_tree/array_binary_tree.kt
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@@ -10,7 +10,8 @@ import utils.TreeNode
import utils.printTree
/* 数组表示下的二叉树类 */
class ArrayBinaryTree(private val tree: List<Int?>) {
/* 构造方法 */
class ArrayBinaryTree(private val tree: MutableList<Int?>) {
/* 列表容量 */
fun size(): Int {
return tree.size
@@ -39,11 +40,12 @@ class ArrayBinaryTree(private val tree: List<Int?>) {
}
/* 层序遍历 */
fun levelOrder(): List<Int?> {
val res = ArrayList<Int?>()
fun levelOrder(): MutableList<Int?> {
val res = mutableListOf<Int?>()
// 直接遍历数组
for (i in 0..<size()) {
if (value(i) != null) res.add(value(i))
if (value(i) != null)
res.add(value(i))
}
return res
}
@@ -51,34 +53,38 @@ class ArrayBinaryTree(private val tree: List<Int?>) {
/* 深度优先遍历 */
fun dfs(i: Int, order: String, res: MutableList<Int?>) {
// 若为空位，则返回
if (value(i) == null) return
if (value(i) == null)
return
// 前序遍历
if ("pre" == order) res.add(value(i))
if ("pre" == order)
res.add(value(i))
dfs(left(i), order, res)
// 中序遍历
if ("in" == order) res.add(value(i))
if ("in" == order)
res.add(value(i))
dfs(right(i), order, res)
// 后序遍历
if ("post" == order) res.add(value(i))
if ("post" == order)
res.add(value(i))
}
/* 前序遍历 */
fun preOrder(): List<Int?> {
val res = ArrayList<Int?>()
fun preOrder(): MutableList<Int?> {
val res = mutableListOf<Int?>()
dfs(0, "pre", res)
return res
}
/* 中序遍历 */
fun inOrder(): List<Int?> {
val res = ArrayList<Int?>()
fun inOrder(): MutableList<Int?> {
val res = mutableListOf<Int?>()
dfs(0, "in", res)
return res
}
/* 后序遍历 */
fun postOrder(): List<Int?> {
val res = ArrayList<Int?>()
fun postOrder(): MutableList<Int?> {
val res = mutableListOf<Int?>()
dfs(0, "post", res)
return res
}