import random import time def sumExists(num_list, sum_num): """ [1,5,2,5], 7 """ print "Searching list of {0} numbers for sum of {1}".format(len(num_list), sum_num) currentPos = 0 num_list.sort() for y in num_list: if y >= sum_num: return False x = sum_num - y if x in num_list and num_list.index(x) != currentPos: print "{0} + {1} equals {2}".format(x,y,sum_num) return True currentPos = currentPos + 1 return False print "Generating numbers" l = [random.randint(1,2000) for i in range(0,100000)] sum_num = random.randint(1,4000) print "Starting test" start_time = time.time() print sumExists(l, sum_num) print "Total seconds: {0}".format(time.time()-start_time)
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