public class RemoveNCharactersFromMiddleOfString_Java {
public static void main(String[] args) {
String str = "abc123def";
int mid = str.length() / 2;
int N = 3;
str = str.substring(0, mid - N / 2) + str.substring(mid + 1 + N / 2);
System.out.println(str);
}
}
/*
run:
abcdef
*/