Java programming

There was a king who wish to conquer his enemy's country. To conquer a country he must know about his enemy's boundary limits. Help him to find his enemy's boundary limits by writing a java program. Input format Integer: No of enemy country(N) N Integer corresponds to no. of villages in each country(M). M Integers corresponds to ID of each villages. Output format Integer output corresponds to ID of each village located at the boundary of each enemy's country. There was a king who wish to conquer his enemy's country. To conquer a country he must know about his enemy's boundary limits. Help him to find his enemy's boundary limits by writing a java program. Input format Integer: No of enemy country(N) N Integer corresponds to no. of villages in each country(M). M Integers corresponds to ID of each villages. Output format Integer output corresponds to ID of each village located at the boundary of each enemy's country