Second program(Java)

import java.util.*;

public class Second {

private static List<String> function(String key, String[] strings) {
	key = key.toLowerCase();
	List<String> result = new ArrayList<>();
	for (int i = 0; i < strings.length; i++) {
		String[] temp = strings[i].split(" ");
		if (temp[0].toLowerCase().startsWith(key) || temp[1].toLowerCase().startsWith(key)) {
			result.add(strings[i]);
		}
	}
	return result;
}

public static void main(String[] args) {
	String[] strings = { "Cecilio Johnes", "Cordell Acott", "Curice Bleuce", "Dalis Menary", "Emanuele Barstock",
			"Emmy Bradane", "Gian Cossington", "Jamaal Danilevich", "Kerri Wilce", "Liuka Cowern", "Merrel Cornuau",
			"Marena Appleton", "Marlee Stobo", "Rochette Brew", "Rudyard Abbate", "Sharona Climo",
			"Shirlee Titcumb", "Taite Joriot", "Taite Huntriss", "Zach Simchenko" };
	System.out.println(function("c", strings));
}

}