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.

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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.

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