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Wednesday, April 11, 2012

PALINDROME IN C WITHOUT USING STRING FUNCTION


/* Program to Find Whether a Number is Palindrome or Not without
using String Functions */



main()
{
int n, reverse = 0, temp;

printf("Enter a number to check if it is a palindrome or not\n");
scanf("%d",&n);

temp = n;

while( temp != 0 )
{
reverse = reverse * 10;
reverse = reverse + temp%10;
temp = temp/10;
}

if ( n == reverse )
printf("%d is a palindrome number.\n", n);
else
printf("%d is not a palindrome number.\n", n);

return 0;
}


/* Program to Find Whether a String is Palindrome or Not without
using String Functions */

#include
#include
main()
{
char s1[20];
int i, j, len=0, flag=0;
printf("\nEnter any string: ");
gets(s1);
for (i=0; s1[i]!='\0'; i++)
len++;
i = 0;
j = len-1;
while (i < len)
{
if (s1[i] != s1[j])
{
flag = 1;
break;
}
i++;
j--;
}
if (flag == 0)
printf("\nString is palindrome");
else
printf("\nString is not palindrome");
getch();
}




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  4. //Single program for Both String or Integer to check palindrome

    //In java with out using string functions like reverse and equals method also and display matching characters also

    package com.practice;

    import java.util.Scanner;

    public class Pallindrome {
    public static void main(String args[]) {
    Scanner sc=new Scanner(System.in);
    int i=0,j=0,k,count=0;
    String input,temp;
    System.out.println("Enter the String or Integer");
    input=sc.nextLine();
    temp=input;
    k=temp.length()-1;
    for(i=0;i<=input.length()-1;i++) {
    if(input.charAt(j)==temp.charAt(k)) {
    count++;
    }
    //For matching characters
    j++;
    k--;
    }
    System.out.println("Matching Characters = "+count);

    if(count==input.length()) {
    System.out.println("It's a pallindrome");
    }
    else {
    System.out.println("It's not a pallindrome");
    }

    }

    }

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