How to reverse a string with letters and numbers so that only the letters extract

Question

How can I reverse the string which includes numbers and letters, but I want to output the letters in reverse order. (Without using string functions)

string = 'Hellow 432'
length = len(string)
output = ""
while length>0:
   output += string[length-1]
   length = length-1
print (output)

Possible duplicate of [Reverse a string in Python](https://stackoverflow.com/questions/931092/reverse-a-string-in-python) — Obsidian Age, Sep 25 '19 at 02:26
Could you please be more clear on the question ? Please include the tag for the programming language to get more quick answers. — Vineeth, Sep 25 '19 at 03:53

score 0 · Answer 1 · answered Sep 25 '19 at 04:17

String details = "Hellow 432";
    string numeric = "";
    string nonnumeric = "";
    char[] mychar = details.ToCharArray();
    foreach (char ch in mychar)
    {
        if (char.IsDigit(ch))
        {

            numeric = numeric + ch.ToString();
        }
        else
        {
            nonnumeric =ch.ToString()+ nonnumeric;
        }
    }

 return nonnumeric + numeric;
}

How to reverse a string with letters and numbers so that only the letters extract

1 Answers1