Answer to Question #219750 in Java | JSP | JSF for harsh

Question #219750

Abhay is playing a shooting game. There are n balloon arranged in a row. Each balloon has a number written on it and Abhay can burst balloons from beginning or end. Abhay is really fond of number k and wants to make the sum of all the balloons remaining equal to k. For busting 1 balloon 1 unit of energy is spent by Abhay


1
Expert's answer
2021-07-22T18:35:25-0400


import java.util.Arrays;
import java.util.Scanner;


public class ShootingGame {


	static int[] numbersCombinations = new int[100];
	static int index = 0;
	static int possibleCounter = 0;// count of all possible ways


	public static void findSumAllBalloons(int[] arr, int start, int length, int sum) {
		if (sum == 0) {
			possibleCounter++;
		} else {
			for (int i = start; i < length; i++) {
				numbersCombinations[index++] = arr[i];
				findSumAllBalloons(arr, i + 1, length - 1, sum - arr[i]);
			}
		}
		index--;
	}


	/**
	 * Main method
	 *
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in); // The first line contains 2 integers
		int N = input.nextInt(); // N denoting the number of balloons and 
		int K = input.nextInt(); // K the sum he want to make.
		int balloonNumbers[] = new int[N];
		// The next line contains N space separated integers denoting the number written
		// on each balloon.
		for (int i = 0; i < N; i++) {
			balloonNumbers[i] = input.nextInt();
		}
		Arrays.sort(balloonNumbers);
		findSumAllBalloons(balloonNumbers, 0, balloonNumbers.length, K);
		System.out.println(possibleCounter+" 1");
		input.close();


	}


}





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