描述:
Given a 32-bit signed integer, reverse digits of an integer.
Example 1:
Input: 123 Output: 321
Example 2:
Input: -123 Output: -321
Example 3:
Input: 120 Output: 21
Note:
Assume we are dealing with an environment which could only hold integers within the 32-bit signed integer range. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.
代码如下
class Solution {
public:
int reverse(int x) {
int sum = 0;
while (x != 0)
{
if (abs(sum) > 214748364) return 0;
sum = sum * 10 + x % 10;
x = x / 10;
}
return sum;
}
};很简单的一个题 只要考虑返回值溢出时返回 0 就行了
本文介绍了一个简单的C++程序,用于反转一个32位有符号整数,并处理可能的溢出情况。当反转后的整数超出32位有符号整数范围时,程序将返回0。
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