EdgeCaseCity.java

class Solution {
    public int reverse(int x) {
        int reversed = 0;
        while (x != 0) {
            int rem = x % 10;
            reversed += rem;
            int prevReverse = reversed;
            boolean xIsBig = x >= 10 || x <= -10;
            if (xIsBig) {
                reversed *= 10;
            }
            // System.out.println(reversed);
            // if (prevReverse != 0) {
            //     System.out.format("x: %d, the div: %d / %d = %d\n", x, reversed, prevReverse, (reversed / prevReverse));
            // }
            if (xIsBig && reversed != prevReverse && prevReverse != 0 && reversed / prevReverse < 10) {
                // System.out.format("the erroneous div: %d / %d = %d\n", reversed, prevReverse, (reversed / prevReverse));
                return 0;
            }
            x = x / 10;
        }
        return reversed;
    }
}