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leetcode-algorithms/src/FindPivotIndex.java at master · anishLearnsToCode/leetcode-algorithms · GitHub
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leetcode-algorithms
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src
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FindPivotIndex.java
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leetcode-algorithms
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src
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FindPivotIndex.java
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import
java
.
util
.
Arrays
;
public
class
FindPivotIndex
{
public
int
pivotIndex
(
int
[]
array
) {
int
sum
=
Arrays
.
stream
(
array
).
sum
();
for
(
int
index
=
0
,
leftSum
=
0
;
index
<
array
.
length
;
index
++) {
leftSum
+=
index
-
1
>=
0
?
array
[
index
-
1
] :
0
;
sum
-=
array
[
index
];
if
(
leftSum
==
sum
) {
return
index
;
}
}
return
-
1
;
}
}
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