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DataStructure-Java/Stack/stackReverse.java at master · joharbatta/DataStructure-Java · GitHub
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stackReverse.java
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stackReverse.java
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import
java
.
util
.*;
import
java
.
util
.
Stack
;
class
stackReverse
{
static
Stack
<
Character
>
s
=
new
Stack
<>();
static
void
reverse
()
{
if
(
s
.
isEmpty
())
{
return
;
}
char
a
=
s
.
pop
();
reverse
();
insertBottom
(
a
);
}
static
void
insertBottom
(
char
a
)
{
if
(
s
.
isEmpty
())
{
s
.
push
(
a
);
return
;
}
char
b
=
s
.
pop
();
insertBottom
(
a
);
s
.
push
(
b
);
}
public
static
void
main
(
String
[]
args
) {
Scanner
in
=
new
Scanner
(
System
.
in
);
// String ans = "",
String
data
=
in
.
nextLine
();
for
(
char
element
:
data
.
toCharArray
())
{
s
.
push
(
element
);
}
reverse
();
// for (char element : data.toCharArray()) {
// ans += s.pop();
// }
System
.
out
.
print
(
s
);
}
}
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