Miscellany

	static boolean backTrack(final int divisors[], final int divisorCount, int currentIndex, int value) {
		if(value>=divisors[currentIndex]) {
			if (0==(value-=divisors[currentIndex])) {
				return true;
			}
			if(currentIndex+1<divisorCount && backTrack(divisors,divisorCount,currentIndex+1,value)) {
				return true;
			}
			currentIndex+=divisors[currentIndex];
		}
		if(currentIndex+1<divisorCount && backTrack(divisors,divisorCount,currentIndex+1,value)) {
			return true;
		}
		return false;
	}


	static boolean backTrack(Integer a[],int k,int n) {
		if(n>=a[k]) {
			if(0==(n-=a[k])) return true;
			if(k+1<a.length && backTrack(a,k+1,n)) return true;
			n+=a[k];
		}
		if(k+1<a.length && backTrack(a,k+1,n)) return true;
		return false;
	}