Probability, Statistics, Distributed Systems, Software Engineering, Interview Questions.
[0]*len(requests) h, j = 0, 0 for x in probs: h += x cum_probs[j] = h j += 1 # Generate uniform random number between 0 and 1 u = random.random() # Do binary search to find smallest i s.t. cum_probs[i] >= u left, right = 0, len(cum_probs)-1 p = -1 while left <= right: mid = int((left+right)/2) if