38 lines
802 B
C++
38 lines
802 B
C++
#include <cstdio>
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class Solution {
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public:
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bool isPalindrome(int x) {
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/*
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// Converting to string is too slow!!
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char buff[64] = { 0 };
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sprintf(buff, "%d", x);
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int len = strlen(buff);
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int L = 0, R = len - 1;
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while (L < R)
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{
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if (buff[L] != buff[R]) return false;
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++L;
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--R;
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}
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return true;
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*/
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if (x < 0) return false;
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int buff[64] = { 0 };
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int c = 0;
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int tx = x;
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while (tx > 0)
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{
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buff[c++] = tx % 10;
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tx /= 10;
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}
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int L = 0, R = c - 1;
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while (L < R)
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{
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if (buff[L] != buff[R]) return false;
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++L;
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--R;
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}
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return true;
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}
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};
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