phone-book.java

// phone book
// 🟢 Easy
// https://www.hackerrank.com/challenges/phone-book/problem?isFullScreen=true
// data structure





import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
      		try {
			int no_of_entries = 0;
			int i = 0;
			String name = null;
			int number = 0;
			String query = null;
			HashMap<String, Integer> phoneBook = new HashMap<String, Integer>();
			BufferedReader b = new BufferedReader(new InputStreamReader(
					System.in));
			no_of_entries = Integer.parseInt(b.readLine());
			while (i < no_of_entries) {
				name = b.readLine();
				number = Integer.parseInt(b.readLine());
				phoneBook.put(name, number);
				i++;
			}
			while (!(query = b.readLine().trim()).isEmpty()) {
				if (phoneBook.containsKey(query))
					System.out.println(query + "=" + phoneBook.get(query));
				else
					System.out.println("Not found");
			}
		} catch (Exception e) {

		}
    }
}