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java-basics/java-programs/FindDuplicateCharacter.java at master · CodeForHunger/java-basics · GitHub
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FindDuplicateCharacter.java
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java-programs
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FindDuplicateCharacter.java
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package
misc
;
import
java
.
util
.
HashSet
;
public
class
FindDuplicateCharacter
{
static
char
getDuplicate
(
char
[]
str
) {
HashSet
<
Character
>
h
=
new
HashSet
<>();
for
(
int
i
=
0
;
i
<
str
.
length
-
1
;
i
++) {
char
c
=
str
[
i
];
if
(
h
.
contains
(
c
)) {
return
c
;
}
else
{
h
.
add
(
c
);
}
}
return
'\0'
;
}
public
static
void
main
(
String
[]
args
) {
String
str
=
"PRADEEP"
;
char
[]
arr
=
str
.
toCharArray
();
System
.
out
.
println
(
getDuplicate
(
arr
));
}
}
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