CareerCup

bool isPalindrome(char* s){
int l = strlen(s);
for(int i=0;i<(l/2); i++)
if (s[i] != s[l-(i+1)])
return false;
return true;
}

typedef enum {false, true} bool;

bool isPalindrome(char*str, size_t nStartIndex, size_t nEndIndex)
{
if (nStartIndex > nEndIndex) return false;
else if (nStartIndex == nEndIndex) return true;
else if (str[nStartIndex] == str[nEndIndex])
{
if (nEndIndex - nStartIndex == 1) return true;
else return isPalindrome(str, nStartIndex + 1, nEndIndex - 1);
}
else return false;
}

This is untested code and is solely my crack at the problem. The call from the caller has to be made as:
isPalindrome(str, 0, n); where n is the last valid index of the string. Please let me know if it is ok.

Amm if i declare a new pointer ... does it count as creating a "buffer"

heres my sol :

#include <stdio.h>

int main(int argc , char* argv[]){

	//take argv[1] ...
	char* temp = argv[1];
	while(*argv[1] != '\0')
		argv[1]++;

	argv[1]--;
	while(*temp != '\0'){
		if(*temp != *argv[1]){
			printf("%c %c no!\n",*temp,*argv[1]);
			return 1;
		}
		temp++;
		argv[1]--;
	}
	printf("yes!\n");
	return 0;
		
}

#include<iostream>
#include<string.h>

int main()
{
    char a[]="..A,,BC..DE.D.,C..BA...";
 int i=0;
 int j=strlen(a)-1;
 
 int flag=0;
 
 while(i<=j)
 {
            while(!(a[i]>='A' && a[i]<='Z'))
            {
                              printf("I String %c\n",a[i]);
                              
                              i++;
                              if(i>j)
                              {
                                     flag=-1;
                                     break;
                              }
            }
            if(flag==-1)
            {
                        printf("Not a palindrome\n");
                                              break;
 
            }
            else
            {
                
            while(!(a[j]>='A' && a[j]<='Z'))
            {
                              printf("J String %c\n",a[j]);
                              j--;
                              if(j<i)
                              {
                                     flag=-1;
                                     break;
                              }
            }
            if(flag==-1)
            {
                        printf("Not a palindrome\n");
                                              break;
 
            }
                
            
            }
            if(flag==0 && a[i]==a[j])
            {
                       i++;
                       j--;
                       
                       
            }
            else
            if(flag==0 && a[i]!=a[j])
            {
                       flag=-1;
                       printf("Not a palindrome\n");
                       break;
            }

 }
    if(flag==0)
    {
               printf("Palindrome\n");
               }
 
 system("PAUSE");   
}

public class start {

public static void main(String[] args) {

String s = "ABXBAZ";

int forward_i = 0;
int backward_i = s.length() - 1;

int ispalindrome = 1;

while(forward_i < backward_i)
{
if(s.charAt(forward_i) != s.charAt(backward_i))
{
ispalindrome = -1;
break;
}

forward_i++;
backward_i--;
}

System.out.println(ispalindrome);
}

}

public class start {

public static void main(String[] args) {

String s = "ABXBAZ";

int forward_i = 0;
int backward_i = s.length() - 1;

int ispalindrome = 1;

while(forward_i < backward_i)
{
if(s.charAt(forward_i) != s.charAt(backward_i))
{
ispalindrome = -1;
break;
}

forward_i++;
backward_i--;
}

System.out.println(ispalindrome);
}

}

int palindrome(char a[]){
int l,i=0,count;
l=length(a);
l=l-1;
for(i=0;i<l;i++,l--){
if(a[i]==a[l]){
continue;
}
else
return 0;
}
return 1;
}