9 - Palindrome Number

 JAVA

• class Solution {
      public boolean isPalindrome(int x) {
          if (x < 0 || (x > 0 && x % 10 == 0)) {
              return false;
          }
          int y = 0;
          for (; y < x; x /= 10) {
              y = y * 10 + x % 10;
          }
          return x == y || x == y / 10;
      }
  }

C++

• class Solution {
  public:
      bool isPalindrome(int x) {
          if (x < 0 || (x && x % 10 == 0)) {
              return false;
          }
          int y = 0;
          for (; y < x; x /= 10) {
              y = y * 10 + x % 10;
          }
          return x == y || x == y / 10;
      }
  };

JS

var isPalindrome = function (x) {
    if (x < 0 || (x > 0 && x % 10 === 0)) {
        return false;
    }
    let y = 0;
    for (; y < x; x = ~~(x / 10)) {
        y = y * 10 + (x % 10);
    }
    return x === y || x === ~~(y / 10);
};