100% fastest code of C code

  • 1

    I only change the type to 'long', the leetcode vm use 64-bit?

    bool isPalindrome(int x) {
        if (x < 0) return false;
        long y=0;
        long xx=x;
        while (xx>0) {
            y = y*10 + xx%10;
        return (y == x);

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