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125 Valid Palindrome.c
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125 Valid Palindrome.c
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bool isPalindrome(char * s)
{
int first_index = 0;
int i=0;
int last_index = 0;
int mid = 0;
bool even_len = false;
while(s[i]!='\0')
{
last_index++;
i++;
}
last_index -= 1;
bool pal_found = true;
char first_element = '\0';
char last_element = '\0';
while(first_index <= last_index)
{
if(((s[first_index] >= '0') && (s[first_index] <= '9')) || ((s[first_index] >= 'a') && (s[first_index] <= 'z')))
{
first_element = s[first_index];
}
else if((s[first_index] >= 'A') && (s[first_index] <= 'Z'))
{
first_element = s[first_index] + ('a' - 'A');
}
else
{
first_index++;
continue;
}
if(((s[last_index] >= '0') && (s[last_index] <= '9')) || ((s[last_index] >= 'a') && (s[last_index] <= 'z')))
{
last_element = s[last_index];
}
else if((s[last_index] >= 'A') && (s[last_index] <= 'Z'))
{
last_element = s[last_index] + ('a' - 'A');
}
else
{
last_index--;
continue;
}
if(first_element == last_element)
{
first_index++;
last_index--;
}
else
{
pal_found = false;
break;
}
}
if(pal_found)
{
return true;
}
else
{
return false;
}
}