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algorithm/Week_04/id_36/LeetCode_169_036.java at master · feixiangcode/algorithm · GitHub
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algorithm
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Week_04
/
id_36
/
LeetCode_169_036.java
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algorithm
/
Week_04
/
id_36
/
LeetCode_169_036.java
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package
com
.
potato
.
leetcode
;
import
java
.
util
.
HashMap
;
import
java
.
util
.
Map
;
public
class
LeetCode_169_036
{
public
int
majorityElement
(
int
[]
nums
) {
Map
<
Integer
,
Integer
>
map
=
new
HashMap
<>();
int
n
=
nums
.
length
;
int
count
=
0
;
for
(
int
i
:
nums
) {
if
(
map
.
containsKey
(
i
)) {
count
=
map
.
get
(
i
) +
1
;
}
else
{
count
=
1
;
}
if
(
count
>
n
/
2
) {
return
i
;
}
map
.
put
(
i
,
count
);
}
return
-
1
;
}
}
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