Answer to Question #260404 in Java | JSP | JSF for sjk

Question

Given a list of strings, find the list of strings which start with letter I in the given strings using Predicate Functional Interface

This exercise contains a class named PredicateFunctionalInterface with the following method:

+findPattern(List) : List

-Should accept list of strings as input

-Should find the list of strings which start with letter I in the given strings

-Should return list of strings which start with letter I in the given strings as output

-Should return empty list if no such string is found which start with letter I

-Should avoid the redundancy among the strings in output

Example

Sample Input:

[Icecream,Water,Ice,Gas,Ice]

Expected Output:

[Icecream,Ice]

Sample Input:

[Java,C,C++,Java,C]

Expected Output:

[]

Sample Input:

[]

Expected Output:

[]

Answer 1

SOLUTION TO ABOVE QUESTION

SOLUTION CODE

import java.util.*;

public class Main {

    public static void main(String[] args) {
        // TODO code application logic here
        Scanner sc = new Scanner(System.in);
         System.out.print("Enter the number of strings you want to add in your list: ");
     int number_of_strings = sc.nextInt();
     System.out.println("The number is " +number_of_strings);
     ArrayList<String> my_string_array = new ArrayList<String>();
     
       //now the elements starting with I we add them in set to avoid redundancy
     
       Set<String> strings_with_I_set = new HashSet<String>();
    
     for(int i = 0; i<number_of_strings; i++)
     {
         System.out.print("Enter string "+(i+1)+": ");
         String my_string = sc.next();
         //ad the string to the ist
          my_string_array.add(my_string);
         char c = my_string.charAt(0);
         //add the string to our list
         if(c=='I')
         {
            strings_with_I_set.add(my_string);
         }
         
     }
     //print the input list
    System.out.println("The input list is: "+my_string_array);
    
    //print the output set
   
   System.out.println("The output list is: "+strings_with_I_set);
        
    }
    
}

SAMPLE OUTPUT PROGRAM