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14c314c08c
* Retranslate the complete English edition from Simplified Chinese * Polish three English explanations after reader-focused review
45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
/**
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* File: hash_map.js
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* Created Time: 2022-12-26
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* Author: Justin (xiefahit@gmail.com)
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*/
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/* Driver code */
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/* Initialize the hash table */
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const map = new Map();
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/* Insert operation */
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// Insert the key-value pair (key, value) into the hash table
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map.set(12836, '小哈');
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map.set(15937, '小啰');
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map.set(16750, '小算');
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map.set(13276, '小法');
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map.set(10583, '小鸭');
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console.info('\nHash table after insertion:\nKey -> Value');
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console.info(map);
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/* Lookup operation */
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// Look up key in the hash table to obtain value
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let name = map.get(15937);
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console.info('\nLook up student ID 15937 to obtain the name ' + name);
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/* Remove operation */
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// Remove the key-value pair (key, value) from the hash table
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map.delete(10583);
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console.info('\nHash table after removing 10583:\nKey -> Value');
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console.info(map);
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/* Traverse the hash table */
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console.info('\nTraverse key-value pairs: Key->Value');
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for (const [k, v] of map.entries()) {
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console.info(k + ' -> ' + v);
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}
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console.info('\nTraverse keys only: Key');
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for (const k of map.keys()) {
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console.info(k);
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}
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console.info('\nTraverse values only: Value');
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for (const v of map.values()) {
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console.info(v);
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}
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