In this HackerRank Java Map problem solution, you are given a phone book that consists of people's names and phone numbers. After that, you will be given some person's name as a query. For each query, print the phone number of that person.
HackerRank Java Map problem solution.
import java.util.*;
import java.io.*;
class Solution{
public static void main(String []argh)
{
HashMap<String, Integer> hash = new HashMap<>();
Scanner in = new Scanner(System.in);
int n=in.nextInt();
in.nextLine();
for(int i=0;i<n;i++)
{
String name=in.nextLine();
int phone=in.nextInt();
in.nextLine();
hash.put(name,phone);
}
while(in.hasNext())
{
String s=in.nextLine();
try
{
int out=hash.get(s);
System.out.println(s+"="+out);
}
catch(Exception e)
{
System.out.println("Not found");
}
}
}
}
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