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Dec 6th, 2004

To form a palindrome of a given string

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HI EVERYONE,
I HAVE GOT A VERY INTERESTING PROBLEM THIS TIME. U HAVE TO FORM A PALINDROME OF AN ENTERED STRING. IT`S NOT THE UASUAL STUFF OF CHECKING WHETHER AN ENTERED STRING IS A PALINDROME OR NOT.
IN THIS PROGRAM, SAY IF THE GIVEN STRING IS:
"A3BCA"
THEN THE PROGRAM SHOULD FORM THE SHORTEST PALINDROME POSSIBLE BY INSERTING "CB3" AT THE SECOND LAST POSITION;
i.e; THE OUTPUT SHOULD BE
"A3BCCB3A"
OR THE OUTPUT CAN ALSO BE
"A3CBC3A"
OR

OR IF THE INPUT IS "AAMDM"
THEN THE SOLUTION IS "AAMDMAA" AND NOT "MDMAAMDM" B`COS WE HAVE TO FIND THE SHORTEST POSSIBLE PALINDROME.

SO, PLZ CAN ANY 1 HELP ME TO BEGIN IN THE RIGHT DIRECTION.

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varunrathi

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Dec 6th, 2004

Re: To form a palindrome of a given string

ah, it's that time of year again.
About right, few weeks before the Christmas vacation...

P.S. posting in all caps is unlikely to get you more help. In fact it's extremely annoying and I won't read any post written that way.
P.P.S. read the posting guidelines. We're not here to do your homework for you.

jwenting

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duckman

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Dec 6th, 2004

Re: To form a palindrome of a given string

please help to initiate me. i don`t want the full work to be done

varunrathi

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Dec 6th, 2004

Re: To form a palindrome of a given string

start by yourself then come back with specific questions.

jwenting

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duckman

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Dec 6th, 2004

Re: To form a palindrome of a given string

Ok, I'll just give you a hint, try to do the program by yourself. Start with matching the characters on the opposite end of the string. On the first mismatch, get the rest of the string, create the reverse string from it and insert it into the right position.

When you do this kind of programs, try to document your thinking with code-like (pseudo-code) sentences. Helps a lot with actual coding.

nvanevski

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Dec 6th, 2004

Re: To form a palindrome of a given string

Hey! NVANEVSKI,
Thanks a lot. Your suggestion made the program so easy that i have just finished doing it.

varunrathi

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Aug 3rd, 2009

Re: To form a palindrome of a given string

Click to Expand / Collapse Quote originally posted by varunrathi ...

HI EVERYONE,
I HAVE GOT A VERY INTERESTING PROBLEM THIS TIME. U HAVE TO FORM A PALINDROME OF AN ENTERED STRING. IT`S NOT THE UASUAL STUFF OF CHECKING WHETHER AN ENTERED STRING IS A PALINDROME OR NOT.
IN THIS PROGRAM, SAY IF THE GIVEN STRING IS:
"A3BCA"
THEN THE PROGRAM SHOULD FORM THE SHORTEST PALINDROME POSSIBLE BY INSERTING "CB3" AT THE SECOND LAST POSITION;
i.e; THE OUTPUT SHOULD BE
"A3BCCB3A"
OR THE OUTPUT CAN ALSO BE
"A3CBC3A"
OR

OR IF THE INPUT IS "AAMDM"
THEN THE SOLUTION IS "AAMDMAA" AND NOT "MDMAAMDM" B`COS WE HAVE TO FIND THE SHORTEST POSSIBLE PALINDROME.

SO, PLZ CAN ANY 1 HELP ME TO BEGIN IN THE RIGHT DIRECTION.

#include<stdio.h>
#include<conio.h>
#include<string.h>
int i,l=0,n,p;
char pal[10];
void main()
{
clrscr();
printf("Enter string:");
scanf("%s",pal);
l=strlen(pal);
for(i=0;i<l-1;i++)
{
printf("%c",pal[i]);
}
for(i=l-2;i>=0;i--)
{
printf("%c",pal[i]);
}
getch();
}

jagsss16

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Aug 3rd, 2009

Re: To form a palindrome of a given string

This post is over four and half years old and it was SOLVED. Why are you reviving old threads.

And there's that blasted void main again.

yellowSnow

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