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leetcode/code/lc9.java at master · mJackie/leetcode · GitHub
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package
code
;
/*
* 9. Palindrome Number
* 题意：判断数字是否是回文数字
* 难度：Easy
* 分类：Math
* 思路：不转换字符串的思路就是把数字反转了以后，比较是否相等
* Tips：lc5, lc9, lc125, lc131, lc234, lc647
*/
public
class
lc9
{
public
boolean
isPalindrome
(
int
x
) {
int
rev
=
0
;
int
temp
=
x
;
while
(
x
>
0
){
rev
=
rev
*
10
+
x
%
10
;
x
=
x
/
10
;
}
return
rev
==
temp
;
}
}
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