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class Solution {
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  public int reverse(int x) {
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    long reverse = 0;
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    while (x != 0) {
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      int digit = x % 10;
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      reverse = reverse * 10 + digit;
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      x = x / 10;
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    }
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    if (reverse > Integer.MAX_VALUE || reverse < Integer.MIN_VALUE) return 0;
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    return (int) reverse;
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  }
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}