title: C: Looping the big array efficiently
body: <p>I have a master list integer array which has around 500 numbers. And, i have a set of 100 randomized number which has picked from the master list to find the missing numbers. Now, I need to go through this randomized number list against the master list. What would be the best approach in C programming to go through it without hanging the program. If i go through in simple 'for' loop for 500 elements, it will hang as it needs to go through the entire list. Could someone direct me on this?</p>
  
  <p>Thanks.</p>