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lualgorithm
/
AlgorithmAndDataStructure
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master
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AlgorithmAndDataStructure
/
SwordToOffer
/
Code
/
46.py
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33 lines (28 loc) · 1.46 KB
master
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AlgorithmAndDataStructure
/
SwordToOffer
/
Code
/
46.py
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33 lines (28 loc) · 1.46 KB
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# -*- coding:utf-8 -*-
'''
圆圈中的最后数字
每年六一儿童节,牛客都会准备一些小礼物去看望孤儿院的小朋友,今年亦是如此。HF作为牛客的资深元老,自然也准备了一些小游戏。其中,有个游戏是这样的:首先,让小朋友们围成一个大圈。然后,他随机指定一个数m,让编号为0的小朋友开始报数。每次喊到m-1的那个小朋友要出列唱首歌,然后可以在礼品箱中任意的挑选礼物,并且不再回到圈中,从他的下一个小朋友开始,继续0...m-1报数....这样下去....直到剩下最后一个小朋友,可以不用表演,并且拿到牛客名贵的“名侦探柯南”典藏版(名额有限哦!!^_^)。请你试着想下,哪个小朋友会得到这份礼品呢?(注:小朋友的编号是从0到n-1)
'''
class
Solution
:
def
LastRemaining_Solution
(
self
,
n
,
m
):
# write code here
if
n
==
0
:
return
-
1
array
=
range
(
n
)
startIndex
=
0
while
len
(
array
)
!=
1
:
startIndex
=
self
.
Helper
(
array
,
startIndex
,
m
)
return
array
[
0
]
def
Helper
(
self
,
array
,
startIndex
,
m
):
size
=
len
(
array
)
curIndex
=
0
for
i
in
range
(
m
):
curIndex
=
startIndex
+
i
if
curIndex
>=
size
:
curIndex
=
curIndex
%
size
del
array
[
curIndex
]
return
curIndex
instr
=
raw_input
(
""
)
lis
=
instr
.
split
(
" "
)
s
=
Solution
()
s
.
LastRemaining_Solution
(
int
(
lis
[
0
]),
int
(
lis
[
2
])
-
1
)
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