How to Reverse String without change the place of Special Characters?

Question

example - abc#def,gh$@
output will be- hgf#edc,ba$@

Answer 1

in java or any language

Answer 2

Ok Here , IN JAVA

You will need a StringBuffer object instead of String object.

Create as follows,

StringBuffer someVariable = new StringBuffer("Your String with characters here ");

someVariable.reverse();

Answer 3

without using any library function. .

Answer 4

ok,
for(int i=str.length()-1; i>=0; i--){
String revStr + =str.charAt(i);
}
revStr will have reversed strimg

Answer 5

hi

Answer 6

I wrote a script in python that reverse the string without changing the position of special characters:
https://code.sololearn.com/cW6tG7B4y1De/#py

Answer 7

ANOTHER METHOD....

System.out.print(reverse(str));
//assume str contains input

public static String reverse(String x)
{
if (x.length() <= 1)
{
return x;
}
return reverse(x.substring(1, x.length())) + x.charAt(0);
}

Answer 8

Mohd Abid, did you solved the problem of reversing the string?

Answer 9

No , my friend Isaac Salcedo ... Can you write in java?

Answer 10

Yes, I will write the program in Java.

Answer 11

This is my Java version of the program that reverse a string without changing the special characters' position that I wrote in python.
https://code.sololearn.com/ct55oHhAaccY/?ref=app

Answer 12

This program is similar to reversing a string using recursion or by loop.. the only difference is you need to skip the non alphanumeric characters of the string.
To detect whether a character is alphanumeric or not.. you can use isalnum function of type.h header file.

while(leftIndex < rightIndex){
temp = inputString[leftIndex];
inputString[leftIndex] = inputString[rightIndex];
inputString[rightIndex] = temp;
// Skip special characters
while(!isalnum(inputString[++leftIndex]);
while(!isalnum(inputString[++rightIndex]);
}

Here is the program of reversing a string using recursion and using loop. you need to modify the code little bit to skip non alphanumeric characters.
http://www.techcrashcourse.com/2014/10/c-program-reverse-string.html
http://www.techcrashcourse.com/2015/03/c-program-to-reverse-string-using-recursion.html

Answer 13

https://code.sololearn.com/cU4ICitfYo0g/?ref=app

Answer 14

You did it!

Answer 15

yes..

Answer 16

Hey Guyz, Please find the code for python :

y = input("Enter a string you want to reverse: ")
x=list(y)
special_chars = "!\"#$%&\'()*+,-./:;<=>?@[\]^_`{|}~"

begin = 0
end = len(x) - 1

for i in range((len(x)//2)):

if (x[begin] in special_chars) and (x[end] in special_chars):
begin = begin + 1
end = end - 1

elif(x[begin] in special_chars):
begin = begin + 1

elif (x[end] in special_chars):
end = end - 1

else:
x[begin],x[end] = x[end],x[begin]
begin = begin + 1
end = end - 1

z=""
print(z.join(x))

Answer 17

Below is the python code which will reverse each word in a string or whole string with out changing the place of special characters:

str_smpl = 'abc#def,gh$@'
lst = []
for word in str_smpl.split(' '):
letters = [c for c in word if c.isalpha()]
for c in word:
if c.isalpha():
lst.append(letters.pop())
continue
else:
lst.append(c)
lst.append(' ')
print("".join(lst))

output: hgf#edc,ba$@

Answer 18

language?