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f68bbb0d59
* Revised the book * Update the book with the second revised edition * Revise base on the manuscript of the first edition
42 lines
1.2 KiB
Dart
42 lines
1.2 KiB
Dart
/**
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* File: hash_map.dart
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* Created Time: 2023-03-29
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* Author: liuyuxin (gvenusleo@gmail.com)
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*/
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/* Driver Code */
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void main() {
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/* 初始化哈希表 */
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final Map<int, String> map = {};
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/* 添加操作 */
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// 在哈希表中添加键值对 (key, value)
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map[12836] = "小哈";
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map[15937] = "小啰";
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map[16750] = "小算";
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map[13276] = "小法";
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map[10583] = "小鸭";
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print("\n添加完成后，哈希表为\nKey -> Value");
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map.forEach((key, value) => print("$key -> $value"));
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/* 查询操作 */
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// 向哈希表中输入键 key ，得到值 value
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final String? name = map[15937];
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print("\n输入学号 15937 ，查询到姓名 $name");
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/* 删除操作 */
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// 在哈希表中删除键值对 (key, value)
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map.remove(10583);
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print("\n删除 10583 后，哈希表为\nKey -> Value");
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map.forEach((key, value) => print("$key -> $value"));
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/* 遍历哈希表 */
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print("\n遍历键值对 Key->Value");
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map.forEach((key, value) => print("$key -> $value"));
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print("\n单独遍历键 Key");
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map.keys.forEach((key) => print(key));
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print("\n单独遍历值 Value");
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map.forEach((key, value) => print("$value"));
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map.values.forEach((value) => print(value));
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}
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