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Java 15
import java.io.*; import java.util.*; import java.util.regex.Pattern; import java.util.regex.Matcher; public class Solution { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int n = scanner.nextInt(); scanner.nextLine(); String sentences[] = new String [n]; for(int i=0;i<n;i++) sentences[i]=scanner.nextLine(); int t = scanner.nextInt(); scanner.nextLine(); int output[] = new int [t]; for(int i=0;i<t;i++) { String word = scanner.nextLine(); output[i]=0; String regex = "(?<=^|[\\W])" + word + "(?=$|[\\W])"; // String regex = "\\b"+ word +"\\b"; //WORKS Pattern pattern = Pattern.compile(regex); for(int j=0;j<n;j++) { Matcher matcher = pattern.matcher(sentences[j]); while(matcher.find()) output[i]++; } } for(int i=0;i<t;i++) System.out.println(output[i]); } }
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Java 15