Write a simple text editor, which stores a string of characters using the list ADT, together with a cursor object that highlights the position of some character in the string (or possibly the position before the first character). Your editor should support the following operations and redisplay the current text (that is, the list) after performing any one of them.
• Left: Move cursor left one character (or nothing if at the beginning)
• Right: Move cursor right one character (or do nothing if at the end)
• Delete: Delete the character to the right of the cursor (or do nothing if at the end)
• Insert c: Insert the character c just after the cursor