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2655a2f66a
* 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. --------- Co-authored-by: Yudong Jin <krahets@163.com>
63 lines
No EOL
1.4 KiB
Kotlin
63 lines
No EOL
1.4 KiB
Kotlin
/**
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* File: list.kt
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* Created Time: 2024-01-25
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* Author: curtishd (1023632660@qq.com)
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*/
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package chapter_array_and_linkedlist
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/* Driver Code */
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fun main() {
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/* 初始化列表 */
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// 可变集合
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val nums = mutableListOf(1, 3, 2, 5, 4)
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println("列表 nums = $nums")
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/* 访问元素 */
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val num = nums[1]
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println("访问索引 1 处的元素，得到 num = $num")
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/* 更新元素 */
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nums[1] = 0
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println("将索引 1 处的元素更新为 0 ，得到 nums = $nums")
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/* 清空列表 */
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nums.clear()
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println("清空列表后 nums = $nums")
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/* 在尾部添加元素 */
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nums.add(1)
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nums.add(3)
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nums.add(2)
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nums.add(5)
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nums.add(4)
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println("添加元素后 nums = $nums")
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/* 在中间插入元素 */
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nums.add(3, 6)
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println("在索引 3 处插入数字 6 ，得到 nums = $nums")
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/* 删除元素 */
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nums.removeAt(3)
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println("删除索引 3 处的元素，得到 nums = $nums")
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/* 通过索引遍历列表 */
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var count = 0
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for (i in nums.indices) {
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count += nums[i]
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}
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/* 直接遍历列表元素 */
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for (j in nums) {
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count += j
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}
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/* 拼接两个列表*/
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val nums1 = mutableListOf(6, 8, 7, 10, 9)
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nums.addAll(nums1)
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println("将列表 nums1 拼接到 nums 之后，得到 nums = $nums")
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/* 排序列表 */
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nums.sort()
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println("排序列表后 nums = $nums")
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} |