45 lines
1.1 KiB
JavaScript
45 lines
1.1 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 hash table */
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const map = new Map();
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/* Add operation */
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// Add key-value pair (key, value) to the hash table
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map.set(12836, 'Ha');
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map.set(15937, 'Luo');
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map.set(16750, 'Suan');
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map.set(13276, 'Fa');
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map.set(10583, 'Ya');
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console.info('\nAfter adding, the hash table is\nKey -> Value');
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console.info(map);
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/* Query operation */
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// Enter key to the hash table, get value
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let name = map.get(15937);
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console.info('\nEnter student ID 15937, found name ' + name);
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/* Remove operation */
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// Remove key-value pair (key, value) from the hash table
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map.delete(10583);
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console.info('\nAfter removing 10583, the hash table is\nKey -> Value');
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console.info(map);
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/* Traverse 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('\nIndividually traverse keys 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('\nIndividually traverse values 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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