Chapter 1, Problem 22C

Program Plan Intro

Strings formed by using characters

Program plan:

• Create a class Permute that displays all the possible strings formed by using the characters.
  • In main() function,
    • Declare the required variables.
    • Create the object for the class permute.
    • Use the object to invoke the method nextLevel().
  • In nextLevel() method,
    • Use the for loop to remove the remaining letters from string and then it is inserted into partial string.
    • Call the function nextLevel().recursively to remove each letter one at a time from remainingLetters and then append it to the partial string.
    • If there are no remaining letters, partial string must be completed and convert it to a string to display it.