Reverse an array without affecting special characters | GeeksforGeeks

This video is contributed by Harshit Jain.

[prabinpanda]

Solution is little wrong. Assume you have more than one special char together.

Instead of if(!alpha....) It should be while(! Alpha).

[venuboini]

Can you provide solution in JAVASCRIPT programming

[I-PixALbI-I]

I wrote the same on C# but my mentor told me solve the task with Stack )

[govindtiwari]

Sir could you please help with Coding to ignore special characters whlie printing the even and odd characters in a string

[logenaldo]

Can you provide solution in C programming

[wecan]

class Solution
{
public:

bool isAlphabet(char x)
{
return ( (x >= 'A' && x <= 'Z') ||
(x >= 'a' && x <= 'z') );
}

string reverse(string str)
{
// Initialize left and right pointers
int r = str.size() - 1, l = 0;

// Traverse string from both ends until
// 'l' and 'r'
while (l < r)
{
// Ignore special characters
if (!isAlphabet(str[l]))
l++;
else if(!isAlphabet(str[r]))
r--;

else // Both str[l] and str[r] are not spacial
{
swap(str[l], str[r]);
l++;
r--;
}
}
return str;
}
};