One-line description: A C++ program that generates all unique permutations of a given string using recursion, sorting, and backtracking. Summary: This C++ program takes a string, such as "123", and ...

If a string contains duplicate characters and we try to generate the permutations of the string (i.e., permutations of all the characters in the string, where n=r in nPr), then duplicate permutations ...

- 1) to different permutations. A recursive approach (which is what I would use) would involve breaking the problem into isomorphic subproblems: to find all permutations of a string, find all ...