Created
May 27, 2014 03:09
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Secretary problem; Daut version towards optimizing average instead
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#Daut's edited secretary problem | |
#function which randomizes a list | |
def randomize_rankings(sec): | |
import random | |
random.shuffle(sec) | |
return sec | |
#function which returns a secretary based on Daut's algorithm | |
def chooseSecretary(sec): | |
max=sec[0] | |
max2=0 | |
max3=0 | |
max4=0 | |
max5=0 | |
max6=0 | |
max7=0 | |
max8=0 | |
max9=0 | |
max10=0 | |
x=1 | |
while x<36: | |
if (sec[x] > max): | |
max = sec[x] | |
x=x+1 | |
while x<60: | |
if (sec[x] > max): | |
return sec[x] | |
if (sec[x] > max2): | |
max2 = sec[x] | |
x=x+1 | |
while x<74: | |
if (sec[x] > max2): | |
return sec[x] | |
if (sec[x] > max3): | |
max3 = sec[x] | |
x=x+1 | |
while x<84: | |
if (sec[x] > max3): | |
return sec[x] | |
if (sec[x] > max4): | |
max4 = sec[x] | |
x=x+1 | |
while x<90: | |
if (sec[x] > max4): | |
return sec[x] | |
if (sec[x] > max5): | |
max5 = sec[x] | |
x=x+1 | |
while x<93: | |
if (sec[x] > max5): | |
return sec[x] | |
if (sec[x] > max6): | |
max6 = sec[x] | |
x=x+1 | |
while x<95: | |
if (sec[x] > max6): | |
return sec[x] | |
if (sec[x] > max7): | |
max7 = sec[x] | |
x=x+1 | |
while x<97: | |
if (sec[x] > max7): | |
return sec[x] | |
if (sec[x] > max8): | |
max8 = sec[x] | |
x=x+1 | |
while x<98: | |
if (sec[x] > max8): | |
return sec[x] | |
if (sec[x] > max9): | |
max9 = sec[x] | |
x=x+1 | |
while x<99: | |
if (sec[x] > max9): | |
return sec[x] | |
if (sec[x] > max10): | |
max10 = sec[x] | |
x=x+1 | |
return sec[99] | |
APPLICANTS = 100 | |
TRIALS = 10000 | |
sec = list(range(0, APPLICANTS)) | |
b=0 | |
bestCount=0 | |
total=0 | |
winners = [] | |
for b in range(TRIALS): | |
secSorted = randomize_rankings(sec) | |
chosen = chooseSecretary(secSorted) | |
if(chosen == APPLICANTS - 1): | |
bestCount += 1 | |
total += chosen | |
b += 1 | |
winners.append(chosen) | |
print "Best count: %s" % bestCount | |
print "Picked the best: %s" % (bestCount / float(TRIALS)) | |
print "Average: %s" % (total / TRIALS) | |
print "Median: %s" % sorted(winners)[len(winners)//2] | |
print "Bottom 10%% %s" % (sum(i < int(APPLICANTS / 10) for i in winners) / float(TRIALS)) | |
#print "All Winners: %s" % sorted(winners) |
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