1

Author: kedebug

ValidPalindrome/ValidPalindrome.cpp

@@ -3,7 +3,9 @@ class Solution {
     bool isPalindrome(string s) {
         // Start typing your C/C++ solution below
         // DO NOT write int main() function
+        
         string alphas;
+        
         for (size_t i = 0; i < s.size(); i++) {
             if ('A' <= s[i] && s[i] <= 'Z') 
                 alphas += s[i] - 'A' + 'a';
@@ -12,9 +14,12 @@ class Solution {
             else if ('0' <= s[i] && s[i] <= '9')
                 alphas += s[i];
         }
+        
         if (alphas.size() == 0)
             return true;
+            
         size_t beg = 0, end = alphas.size() - 1;
+        
         while (beg < end) {
             if (alphas[beg] == alphas[end]) {
                 beg += 1;
@@ -25,4 +30,4 @@ class Solution {
         }
         return true;
     }
-};
+};