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14c314c08c
* Retranslate the complete English edition from Simplified Chinese * Polish three English explanations after reader-focused review
45 lines
1.1 KiB
Ruby
45 lines
1.1 KiB
Ruby
=begin
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File: hash_map.rb
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Created Time: 2024-04-14
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Author: Xuan Khoa Tu Nguyen (ngxktuzkai2000@gmail.com)
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=end
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require_relative '../utils/print_util'
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### Driver code ###
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if __FILE__ == $0
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# Initialize the hash table
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hmap = {}
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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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hmap[12836] = "小哈"
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hmap[15937] = "小啰"
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hmap[16750] = "小算"
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hmap[13276] = "小法"
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hmap[10583] = "小鸭"
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puts "\nHash table after insertion:\nKey -> Value"
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print_hash_map(hmap)
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# Lookup operation
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# Look up key in the hash table to obtain value
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name = hmap[15937]
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puts "\nLook up student ID 15937: 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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hmap.delete(10583)
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puts "\nHash table after removing 10583:\nKey -> Value"
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print_hash_map(hmap)
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# Traverse the hash table
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puts "\nTraverse key-value pairs: Key->Value"
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hmap.entries.each { |key, value| puts "#{key} -> #{value}" }
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puts "\nTraverse keys only: Key"
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hmap.keys.each { |key| puts key }
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puts "\nTraverse values only: Value"
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hmap.values.each { |val| puts val }
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end
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