Reverse digits of an integer.
Example1: x = 123, return 321 Example2: x = -123, return -321
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Note: The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows.
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反转一个整数。
public class Solution {
public int reverse(int x) {
long a = 0;
while(x!=0){
a = a*10 + x;
x = x/10;
}
if(a>Integer.MAX_VALUE||a<Integer.MIN_VALUE){
return 0;
}
return (int)a;
}
}
