title: Algorithm to find smallest set of objects with a total combined value bewteen X and Y
body: <p>I have a set of Objects (around a 100), and each one has a float value (realistically from -10000 to 10000, but let's assume there are no limits).</p>
  
  <p>My objective is to find the smallest set of those objects (as few as possible) of which the total combined value would be between variables X and Y.</p>
  
  <p>I believe I could tackle this task with some Evolutionary Algorithms, but I was wondering if there was a simpler mathematical solution to this?</p>
  
  <p>I am programming in PHP, but I don't believe that's relevant and I could use any ideas on algorithm/pseudocode. </p>
  
  <p>Thank you!</p>