Question

Write a java program that presents the user with the following menu

Linear Search

Binary Search

The user can choose any of these operations using numbers 1 or 2. Once selected, the operation asks the user for an input file to be searched (the file is provided to you and is named input.txt).

If option 1 or 2 is selected, it asks the user for the search string. This is the string that the user wants the program to search in the input file. Implement two methods stubs:

1) linearSearch - takes a file and a search string as inputs, and returns a boolean signifying found or not found.

2) binarySearch - takes a file and a search string as inputs, and returns a boolean signifying found or not found.

You will develop these stubs into actual functionality in the next assignment.

Sample Output 1:

Please select from below:

1. Linear Search

2. Binary Search

Your selection: 1

Please enter the input file to searched: input.txt

Please enter the string to be searched in input.txt: RaDar

Search functionality is under maintenance. Thank you for using my search program.

---------------------------------------------------------------------------------------

Sample output 2

Please select from below:

1. Linear Search

2. Binary Search

Your selection: 90

Please select between option 1 or 2

Your selection: 2

Please enter the input file to searched: words.txt

Please enter the string to be searched in words.txt: Recoil

Search functionality is under maintenance. Thank you for using my search program.

Answer 1

JAVA code for above problem-

import java.io.*;
import java.util.Scanner;

//class that contains stub methods- linearSearch & binarySearch
public class Search{
  
//method to display menu
public void displayMenu(){
System.out.println("Please select from below:");
System.out.println("1. Linear Search");
System.out.println("2. Binary Search");
}
  
//stub method for linear search
public boolean linearSearch(String filename,String word){
  
return(true);
}
//stub method for binary search
public boolean binarySearch(String filename,String word){
  
return(true);
}
}

class GFG {
   public static void main (String[] args) {
   //scanner object
   Scanner inp = new Scanner(System.in);
   //object of Search class
   Search myobj=new Search();
   //displaying menu
   myobj.displayMenu();
  
   while(true){
   //taking user input
   System.out.println("Your Selection:");
   int option = inp.nextInt();
  
   if(option==1 || option==2){
   //taking input
   String inputFile,word;
   System.out.println("Please enter the input file to searched:");
   inputFile=inp.nextLine();
   System.out.println("Please enter the string to be searched in"+inputFile+":");
   word=inp.nextLine();
   System.out.println("Search functionality is under maintenance. Thank you for using my search program.");
  
   break;
   }
   else{
   System.out.println("Please select between option 1 or 2");
   }
   }
      
   }
}

Code-

Input and Output-


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