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javaimport java.util.Scanner; import java.util.Hashtable; public class poj2503{ public static void main(String[] args) { Scanner sc=new Scanner(System.in); Hashtable< String,String> table = new Hashtable< String, String>(); String input; String [] array=new String[2]; while(sc.hasNext()){ input=sc.nextLine(); if(input.length()==0) {break;} array=input.split(" "); table.put(array[1],array[0]);//put() 的作用是对外提供接口,让Hashtable对象可以通过put()将“key-value”添加到Hashtable中。 } while(sc.hasNext()){ input=sc.nextLine(); if(table.get(input)!=null) { System.out.println(table.get(input));}//get() 的作用就是获取key对应的value,没有的话返回null else {System.out.println("eh");} } } } Followed by: Post your reply here: |
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