Largest Subsequence Sum
	
	/**
	 * Compute Largest Subsequent Sum (LSS) in Linear Time
	 * 
	 * e.g.
	 * 
	 * {1, -5, 5, 3, -6, 1, 5, 3, -1, 7}
	 * 
	 * LSS:  1 + 5 + 3 = 9
	 * 
	 * */