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use the code shown in video #511

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Merged
merged 3 commits into from
Jul 23, 2022
Merged

use the code shown in video #511

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1a70e4d
use the code shown in video
johan456789 Jul 17, 2022
43bc312
Update 134-Gas-Station.py
johan456789 Jul 23, 2022
e4b33cc
Merge branch 'main' into patch-1
johan456789 Jul 23, 2022
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23 changes: 12 additions & 11 deletions 134-Gas-Station.py
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Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
class Solution:
def canCompleteCircuit(self, gas: List[int], cost: List[int]) -> int:
start, end = len(gas) - 1, 0
total = gas[start] - cost[start]
if sum(gas) < sum(cost):
return -1

res = 0
total = 0
for i in range(len(gas)):
total += gas[i] - cost[i]

if total < 0:
total = 0
res = i + 1

while start >= end:
while total < 0 and start >= end:
start -= 1
total += gas[start] - cost[start]
if start == end:
return start
total += gas[end] - cost[end]
end += 1
return -1
return res
23 changes: 12 additions & 11 deletions python/134-Gas-Station.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
class Solution:
def canCompleteCircuit(self, gas: List[int], cost: List[int]) -> int:
start, end = len(gas) - 1, 0
total = gas[start] - cost[start]
if sum(gas) < sum(cost):
return -1

res = 0
total = 0
for i in range(len(gas)):
total += gas[i] - cost[i]

if total < 0:
total = 0
res = i + 1

while start >= end:
while total < 0 and start >= end:
start -= 1
total += gas[start] - cost[start]
if start == end:
return start
total += gas[end] - cost[end]
end += 1
return -1
return res