The awk command can make it easy to remove duplicate characters from a string even when those characters aren’t sequential, especially when the process is turned into a script. First, the awk command ...

Given a string str which may contain lowercase and uppercase characters. The task is to remove all duplicate characters from the string and find the resultant string. The order of remaining characters ...

Create a result string. Then loop through the string and check whether the current character not in the string. If it is not, then add it. Otherwise, it’s already there adding it will make it ...