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Simplify kotlin code and improve code readability (#1198)

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* Add kotlin code block for chapter_hashing

* Add kotlin code block for chapter_heap.

* Add kotlin code block for chapter_stack_and_queue and chapter_tree

* fix indentation

* Update binary_tree.md

* style(kotlin): simplify code and improve readability.

* simplify kt code for chapter_computational_complexity.

* style(kotlin): replace ArrayList with MutableList.

* Update subset_sum_i.kt

Use kotlin api instead of java.

* Update subset_sum_ii.kt

use kotlin api instead of java

* style(kotlin): replace ArrayList with mutablelist.

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Co-authored-by: Yudong Jin <krahets@163.com>
This commit is contained in:
curtishd
2024-04-07 01:31:58 +08:00
committed by GitHub
parent 931d8f5089
commit 2655a2f66a
17 changed files with 101 additions and 101 deletions
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codes/kotlin/chapter_backtracking/preorder_traversal_i_compact.kt
+3 -3
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@@ -31,12 +31,12 @@ fun main() {
printTree(root)
// 前序遍历
res = ArrayList()
res = mutableListOf()
preOrder(root)
println("\n输出所有值为 7 的节点")
val vals: MutableList<Int> = ArrayList()
for (node in res as ArrayList<TreeNode>) {
val vals = mutableListOf<Int>()
for (node in res!!) {
vals.add(node.value)
}
println(vals)