check if a number is palindrome code example
Example 1: check if a string is palindrome cpp
#include <bits/stdc++.h>
using namespace std;
int main(){
string s;
cin >> s;
int l = 0;
int h = s.length()-1;
while(h > l){
if(s[l++] != s[h--]){
cout << "Not a palindrome" << endl;
return 0;
}
}
cout << "Is a palindrome" << endl;
return 0;
}
Example 2: check if palindrome
function isPalindrome(str) {
str = str.toLowerCase();
return str === str.split("").reverse().join("");
}
Example 3: Write a program to check whether inputted string is palindrome or not.
#include <stdio.h>
#include <string.h>
int main()
{
char s[1000];
int i,n,c=0;
printf("Enter the string : ");
gets(s);
n=strlen(s);
for(i=0;i<n/2;i++)
{
if(s[i]==s[n-i-1])
c++;
}
if(c==i)
printf("string is palindrome");
else
printf("string is not palindrome");
return 0;
}
Example 4: determine whether integer is a palindrome
public class Solution {
public bool IsPalindrome(int x) {
if(x < 0 || (x % 10 == 0 && x != 0)) {
return false;
}
int revertedNumber = 0;
while(x > revertedNumber) {
revertedNumber = revertedNumber * 10 + x % 10;
x /= 10;
}
return x == revertedNumber || x == revertedNumber/10;
}
}
Example 5: check palindrome
bool isPlaindrome(string s)
{
int i=0;
int j=s.length()-1;
while(i<j)
{
if(s[i]==s[j])
{i++;
j--;}
else break;
}
if (i==j || i>j) return 1;
else return 0;
}