=begin File: hashing_search.rb Created Time: 2024-04-09 Author: Blue Bean (lonnnnnnner@gmail.com) =end require_relative '../utils/list_node' ### 雜湊查詢(陣列) ### def hashing_search_array(hmap, target) # 雜湊表的 key: 目標元素,value: 索引 # 若雜湊表中無此 key ,返回 -1 hmap[target] || -1 end ### 雜湊查詢(鏈結串列) ### def hashing_search_linkedlist(hmap, target) # 雜湊表的 key: 目標元素,value: 節點物件 # 若雜湊表中無此 key ,返回 None hmap[target] || nil end ### Driver Code ### if __FILE__ == $0 target = 3 # 雜湊查詢(陣列) nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8] # 初始化雜湊表 map0 = {} for i in 0...nums.length map0[nums[i]] = i # key: 元素,value: 索引 end index = hashing_search_array(map0, target) puts "目標元素 3 的索引 = #{index}" # 雜湊查詢(鏈結串列) head = arr_to_linked_list(nums) # 初始化雜湊表 map1 = {} while head map1[head.val] = head head = head.next end node = hashing_search_linkedlist(map1, target) puts "目標節點值 3 的對應節點物件為 #{node}" end