By writing user defined function.
Not possible through html. Use php strrev function. For eg:
A predefined function can reverse a string as shown below:echo strrev('pizza'); // outputs: azzip
Without any function is impossible. So I'll assume you mean any coded function, in which case the predefined function below is your answer.$string = strrev($string);
sdfdg
with a loop. len= strlen (s); p= s; q= s+len-1; while (p<q) { (swap) ++p; --q; }
shashi
You could use a function like this:function isPalindrome($string) {$string = strtolower($string);return (strrev($string) == $string) ? true : false;}and then to check a palindrome call an if statement like so:if(isPalindrome($test)) {echo $test.' is a palindrome';}else {echo $test.' is not a palindrome';}
To reverse a number, first convert the number to a string, then reverse the string. Given your number consists of alphanumeric characters, the number must already be a string so simply reverse the string: #include<string> using std::string; string reverse (const string& s) { string str {}; for (auto c : s) str.insert (str.begin(), c); return str; } int main () { std::cout << "Enter a number: "; string s {}; std::cin >> s; std::cout << "The number in reverse is: " << reverse (s); }
use the strrev() function on the given string and compare with original string.If both are equal they are palindromes else not.
You can create a separate string initially empty. Then using a loop, start at the end of the string and add it to the end of the other string. At the end of the loop, the other string would contain the reverse.
#include<stdio.h> #include<conio.h> #include<string.h> void main() { char a[15],b[15]; printf("Enter the string\n"); scanf("%s",&a); strcpy(b,a); strrev(a); if(strcmp(a,b)==0) printf("The String is a palindrome"); else printf("The String is not a palindrome"); }
#include<stdio.h> main() { char a[20],b[20]; printf("enter a string"); scanf("%s",&a); strcpy(b,a);//copies string a to b strrev(b);//reverses string b if(strcmp(a,b)==0)//compares if the original and reverse strings are same printf("\n%s is a palindrome",a); else printf("\n%s is not a palindrome",a); return 0; }