Consider the function below to reverse the substring of $S$ from position $i$ to $j.$

If S were defined as a string "abcdefg" then

reverseString $(S,0,$ len $(S)-1)$ function would return "gfedcba"

reversestring $(5,3,4)$ function would return "abcedfg"

Function in pseudocode:

reversestring $($S$,$ int $i,$ int $j)$

if $=S[i]S[i]=S[j]S[j]=S,i+1,j-1S$