1.2 Reverse a String

Given a string "abcd", write a function that would make it "dcba"

My idea was to basically swap the first and last element, then swap 2nd and 2nd to last element, etc...

psuedocode:

string Reverse(string input_string)
  int front = 0;
  int back = input_string.Length -1
  string reverse_string = new string(input_string.Length - 1)

while front < back
    reverse_string[front] = input_string[back]
    reverse_string[back] = input_string[front]
    front++
    back--
return reverse_string