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psf/black code formatting (#1277)

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This commit is contained in:
William Zhang
2019-10-05 01:14:13 -04:00
committed by Christian Clauss
parent 07f04a2e55
commit 9eac17a408
291 changed files with 6014 additions and 4571 deletions
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20
dynamic_programming/fractional_knapsack.py
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@ -1,12 +1,20 @@
from itertools import accumulate
from bisect import bisect
def fracKnapsack(vl, wt, W, n):
r = list(sorted(zip(vl,wt), key=lambda x:x[0]/x[1],reverse=True))
vl , wt = [i[0] for i in r],[i[1] for i in r]
acc=list(accumulate(wt))
k = bisect(acc,W)
return 0 if k == 0 else sum(vl[:k])+(W-acc[k-1])*(vl[k])/(wt[k]) if k!=n else sum(vl[:k])
r = list(sorted(zip(vl, wt), key=lambda x: x[0] / x[1], reverse=True))
vl, wt = [i[0] for i in r], [i[1] for i in r]
acc = list(accumulate(wt))
k = bisect(acc, W)
return (
0
if k == 0
else sum(vl[:k]) + (W - acc[k - 1]) * (vl[k]) / (wt[k])
if k != n
else sum(vl[:k])
)
print("%.0f"%fracKnapsack([60, 100, 120],[10, 20, 30],50,3))
print("%.0f" % fracKnapsack([60, 100, 120], [10, 20, 30], 50, 3))