This Java program is designed to remove duplicate characters from a given input string. It utilizes a boolean array as a map to keep track of the occurrence of each character in the string. BlueJ: It ...

- Use stack instead of stringBuffer: keep append/remove last added item - However, stringBuffer appears to be faster than stack. Given a string which contains only lowercase letters, remove duplicate ...

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 ...