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67 lines
2.0 KiB
67 lines
2.0 KiB
/**
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* File: list.cs
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* Created Time: 2022-12-23
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* Author: haptear (haptear@hotmail.com)
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*/
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namespace hello_algo.chapter_array_and_linkedlist;
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public class list {
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[Test]
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public void Test() {
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/* 初始化列表 */
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int[] numbers = [1, 3, 2, 5, 4];
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List<int> nums = [.. numbers];
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Console.WriteLine("列表 nums = " + string.Join(",", nums));
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/* 访问元素 */
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int num = nums[1];
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Console.WriteLine("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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Console.WriteLine("将索引 1 处的元素更新为 0 ，得到 nums = " + string.Join(",", nums));
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/* 清空列表 */
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nums.Clear();
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Console.WriteLine("清空列表后 nums = " + string.Join(",", 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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Console.WriteLine("添加元素后 nums = " + string.Join(",", nums));
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/* 在中间插入元素 */
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nums.Insert(3, 6);
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Console.WriteLine("在索引 3 处插入数字 6 ，得到 nums = " + string.Join(",", nums));
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/* 删除元素 */
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nums.RemoveAt(3);
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Console.WriteLine("删除索引 3 处的元素，得到 nums = " + string.Join(",", nums));
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/* 通过索引遍历列表 */
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int count = 0;
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for (int i = 0; i < nums.Count; i++) {
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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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count = 0;
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foreach (int x in nums) {
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count += x;
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}
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/* 拼接两个列表 */
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List<int> nums1 = [6, 8, 7, 10, 9];
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nums.AddRange(nums1);
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Console.WriteLine("将列表 nums1 拼接到 nums 之后，得到 nums = " + string.Join(",", nums));
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/* 排序列表 */
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nums.Sort(); // 排序后，列表元素从小到大排列
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Console.WriteLine("排序列表后 nums = " + string.Join(",", nums));
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}
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}
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